## Books

*Infrastructure: A Guide to the Industrial Landscape.* Revised and updated edition. New York, London: W. W. Norton & Company. 2014. ISBN 978-0-393-34983-2. Publication date: October 27, 2014. (First edition published 2005 under the title *Infrastructure: A Field Guide to the Industrial Landscape.*) [For more information, see the *Infrastructure* web site.]

*Group Theory in the Bedroom, and Other Mathematical Diversions*. New York: Hill and Wang, 2008. ISBN-10 0-8090-5219-9. ISBN-13: 978-0-8090-5219-6. Publication date: April 1, 2008. [For more information, see the *GTiB* web site.]

## Computing Science columns and other works for *American Scientist*

Computing Science: Computer Vision and Computer Hallucinations. *American Scientist*, Vol. 103, No. 6, November–December 2015, pages 380–383. [Exploring the "deep dreams" of artificial neural networks.] HTML PDF

Computing Science: Programs and Probability. *American Scientist*, Vol. 103, No. 5, September–October 2015, pages 326–329. [On probabilistic programming languages.] HTML PDF

Computing Science: Playing in Traffic. *American Scientist*, Vol. 103, No. 4, July–August 2015, pages 260–263. [On Braess's paradox in road networks.] HTML PDF

Computing Science: Crawling toward a Wiser Web. *American Scientist*, Vol. 103, No. 3, May–June 2015, pages 184-187. [On the Common Crawl.] HTML PDF

Computing Science: The 100-Billion-Body Problem. *American Scientist*, Vol. 103, No. 2, March–April 2015, pages 90-93. [On simulating the dynamics of a galaxy with 10^{8} stars.] HTML PDF

Computing Science: Cultures of Code. *American Scientist*, Vol. 103, No. 1, January–February 2015, pages 10-13. [On the cultural differences between computer science, computational science, and software engineering.] HTML PDF

Computing Science: Clarity in Climate Modeling. *American Scientist*, Vol. 102, No. 6, November–December 2014, pages 422-425. [Computational models are a key part of the climate-change debate. Can nonexperts hope to understand how they work?] HTML PDF

Computing Science: Pencil, Paper, and Pi. *American Scientist*, Vol. 102, No. 5, September–October 2014, pages 342-345. [On William Shanks's attempts to compute hundreds of digits of pi in the 19th century.] HTML PDF

Computing Science: Belles lettres Meets Big Data. *American Scientist*, Vol. 102, No. 4, July–August 2014, pages 262-265. [On two 19th-century predecessors of digital humanities.] HTML PDF

Computing Science: Delving into Deep Learning. *American Scientist*, Vol. 102, No. 3, May–June 2014, pages 186-189. [On the renaissance of multilayer neural networks.] HTML PDF

Computing Science: Uniquely Me! *American Scientist*, Vol. 102, No. 2, March–April 2014, pages 106-109. [On the combinatorics of uniqueness and its effect on privacy and anonymity.] HTML PDF

Computing Science: Programming Your Quantum Computer. *American Scientist*, Vol. 102, No. 1, January–February 2014, pages 22-25. [On two programming languages for quantum computation.] HTML PDF

Computing Science: New Dilemmas for the Prisoner. *American Scientist*, Vol. 101, No. 6, November-December 2013, pages 422-425. [On new strategies for the game of Prisoner’s Dilemma.] HTML PDF

Computing Science: The Math of Segregation. *American Scientist*, Vol. 101, No. 5, September-October 2013, pages 338-341. [On analytic solutions of the Schelling model of residential segregation.] HTML PDF

Computing Science: What’s in Brian’s Brain? *American Scientist*, Vol. 101, No. 4, July-August 2013, pages 256-259. [On why the most familiar computing device is the least understood.] HTML PDF

Computing Science: Crinkly Curves. *American Scientist*, Vol. 101, No. 3, May-June 2013, pages 178-183. [On the Hilbert curve and other space-filling curves.] HTML PDF (Reprinted in *The Best Writing on Mathematics 2014*, Mircea Pitici, editor, Princeton University Press, 2014.)

Computing Science: First Links in the Markov Chain. *American Scientist*, Vol. 101, No. 2, March-April 2013, pages 92-97. [On the centenary of A. A. Markov's probabilistic analysis of *Eugene Onegin*.] HTML PDF

Computing Science: Imitation of Life. *American Scientist*, Vol. 101, No. 1, January-February 2013, pages 10-15. [On a simulation of a complete living cell.] HTML PDF

Computing Science: The Science of Sticky Spheres. *American Scientist*, Vol. 100, No. 6, November-December 2012, pages 442-449. [How many spheres can touch one another in a dense cluster?] HTML PDF

Computing Science: Alice and Bob in Cipherspace. *American Scientist*, Vol. 100, No. 5, September-October 2012, pages 362-367. [On fully homomorphic encryption.] HTML, PDF

Computing Science: The Manifest Destiny of Artificial Intelligence. *American Scientist*, Vol. 100, No. 4, July-August 2012, pages 282-287. [AI meets Big Data.] HTML, PDF

Computing Science: Computation and the Human Predicament. *American Scientist*, Vol. 100, No. 3, May-June 2012, pages 186-191. [Looking back on *The Limits to Growth*, 40 years on.] HTML, PDF, World3 model in Javascript

Computing Science: Pixels or Perish. *American Scientist*, Vol. 100, No. 2, March-April 2012, pages 106-111. [On the changing nature of scientific illustration as publications leave behind the ink-on-paper tradition.] HTML PDF

Computing Science: A Box of Universe. *American Scientist*, Vol. 100, No. 1, January-February 2012, pages 10-15. [On cosmological *n*-body simulation.] HTML PDF

Computing Science: An Adventure in the *N*th Dimension. *American Scientist*, Vol. 99, No. 6, November-December 2011, pages 442-446. [On what happens to the volume of a ball in higher-dimensional spaces.] HTML PDF (Reprinted in *The Best Writing on Mathematics 2012*, Mircea Pitici, editor, Princeton University Press, 2012.)

Computing Science: Leave the Driving to It. *American Scientist*, Vol. 99, No. 5, September-October 2011, pages 362-366. [On cars and trucks that drive themselves.] HTML PDF

Computing Science: Quasirandom Ramblings. *American Scientist*, Vol. 99, No. 4, July-August 2011, pages 282-287. [On simulations driven by pseudorandom and quasirandom numbers.] HTML PDF [French translation published as Excursions quasi-aléatoires, *Pour la Science* no. 410, Décembre 2011, pages 54–60.] [German translation published as Spiel mit dem Zufall, *Spektrum der Wissenschaft* Februar 2012, pages 88–94. ]

Computing Science: Bit Lit. *American Scientist*, Vol. 99, No. 3, May-June 2011, pages 190-194. [On a database of words extracted from five million digitized books.] HTML PDF

Computing Science: The Memristor. *American Scientist*, Vol. 99, No. 2, March-April 2011, pages 106-110. [On a new passive electronic circuit element.] HTML PDF

Computing Science: Flights of Fancy. *American Scientist*, Vol. 99, No. 1, January-February 2011, pages 10-14. [On an algorithmic approach to understanding bird flocks.] HTML PDF [German translation published as Rätselhafte Koordination in Vogelschwärmen, *Spektrum der Wissenschaft*, Januar 2012, pages 90–96.]

Computing Science: Hip-Hop Physics. *American Scientist*, Vol. 97, No. 6, November-December 2009, pages 438-442. [On the Hubbard model of cooperative behavior in electrons.] HTML PDF

Computing Science: The Higher Arithmetic. *American Scientist*, Vol. 97, No. 5, September-October 2009, pages 364-368. [On computing with very large numbers.] HTML PDF (Reprinted in *The Best Writing on Mathematics 2010*, Mircea Pitici, editor, Princeton University Press, 2011.)

Computing Science: The Best Bits. *American Scientist*, Vol. 97, No. 4, July-August 2009, pages 276-280. [On compressive sensing.] HTML PDF

Computing Science: Everything Is Under Control. *American Scientist*, Vol. 97, No. 3, May-June 2009, pages 186-191. [On applying ideas from control theory to the world economy.]. HTML PDF

Computing Science: Writing Math on the Web. *American Scientist*, Vol. 97, No. 2, March-April 2009, pages 98-102. [On the difficulty of displaying mathematical notation on the web.] HTML PDF

Computing Science: Automation on the Job. *American Scientist*, Vol. 97, No. 1, January-February 2009, pages 10-14. [On the social and economic effects of automation since the 1950s.] HTML PDF

Computing Science: Getting Your Quarks in a Row. *American Scientist*, Vol. 96, No. 6, November-December 2008, pages 450-454. [On the physical theory called lattice quantum chromodynamics.] HTML PDF Python source code

Computing Science: Calculemus! *American Scientist*, Vol. 96, No. 5, September-October 2008, pages 362-366. [A manifesto celebrating programming for answers (as opposed to programming as software development).] HTML PDF

Computing Science: The Britney Spears Problem. *American Scientist*, Vol. 96, No. 4, July-August 2008, pages 274-279. [On stream algorithms.] HTML PDF

Computing Science: Wagering with Zeno. *American Scientist*, Vol. 96, No. 3, May-June 2008, pages 194-199. [Exploring a game played with coins of value 1, 1/2, 1/4, 1/8....] HTML PDF

Computing Science: Computational Photography. *American Scientist*, Vol. 96, No. 2, March-April 2008, pages 94-98. [On what comes next after the digital camera.] HTML PDF [German translation published as Die Zukunft der Digitalfotografie, *Spektrum der Wissenshaft*, August 2008, pages 78-83.]

Computing Science: Accidental Algorithms. *American Scientist*, Vol. 96, No. 1, January-February 2008, pages 9-13. [On the holographic algorithms of Leslie Valiant.] HTML PDF

Computing Science: Computing in a Parallel Universe. *American Scientist*, Vol. 95, No. 6, November-December 2007, pages 476-480. [On multicore processor chips.] HTML PDF

Computing Science: Sorting Out the Genome. *American Scientist*, Vol. 95, No. 5, September-October 2007, pages 386-391. [On sorting by reversals in bioinformatics.] HTML PDF See also a related bit-player item, and a Flash simulation.

Computing Science: How Many Ways Can You Spell V1@gra? *American Scientist*, Vol. 95, No. 4, July-August 2007, pages 298-302. [On strategies of obfuscation in spam.] HTML PDF

Computing Science: Fat Tails. *American Scientist*, Vol. 95, No. 3, May-June 2007, pages 200-204. [On the “factoidal” function and distributions without a well-defined mean.] HTML PDF

Computing Science: Trains of Thought. *American Scientist*, Vol. 95, No. 2, March-April 2007, pages 108-113. [On mathematical puzzles in railroading.] HTML PDF

Computing Science: Foolproof. *American Scientist*, Vol. 95, No. 1, January-February 2007, pages 10-15. [On mathematical proof.] See also my translation of Pierre Laurent Wantzel’s proof of the impossibility of trisecting an arbitrary angle. HTML PDF [Dutch translation published as Foolproof in *Nieuw Archief voor Wiskunde* 5/8 No. 2, Juni 2007. PDF]

Computing Science: Up a Lazy River. *American Scientist*, Vol. 94, No. 6, November-December 2006, pages 490-494. [On river meanders.] HTML PDF

Computing Science: Connecting the Dots. *American Scientist*, Vol. 94, No. 5, September-October 2006, pages 400-404. [On computational aspects of government surveillance programs.] HTML PDF [German translation published as Terroristensuche in Telefonnetzen? in *Spektrum der Wissenshaft*, Februar 2007, pages 108-113. PDF]

Computing Science: The Semicolon Wars. *American Scientist*, Vol. 94, No. 4, July-August 2006, pages 299-303. [On the diversity and proliferation of programming languages.] HTML PDF [German translation published as Der Strichpunkt-Krieg in *Spektrum der Wissenshaft*, Juni 2007, pages 98-104. PDF]

Computing Science: Gauss’s Day of Reckoning. *American Scientist*, Vol. 94, No. 3, May-June 2006, pages 200-205. [On the many retellings of a famous story about the young Carl Friedrich Gauss.] HTML PDF See also three related bit-player items (1, 2, 3) and supplementary material: texts, table, bibliography.

Computing Science: Reverse Engineering. *American Scientist*, Vol. 94, No. 2, March-April 2006, pages 107-111. [On reversible computing technologies.] HTML PDF

Computing Science: Unwed Numbers. *American Scientist,* Vol. 94, No. 1, January-February 2006, pages 12-15. [On the mathematics of Sudoku.] HTML PDF [Abridged version reprinted as The Science of Sudoku, *The National Post* (Canada), Vol. 8, No. 85, February 2, 2006, p. A19.]

Essay: Natural and Unnatural Disasters. *American Scientist*, Vol. 93, No. 6, November-December 2005, pages 496-499. [On the flooding of New Orleans after Hurricane Katrina.] HTML PDF

Computing Science: Group Theory in the Bedroom, *American Scientist,* Vol. 93, No. 5, September-October 2005, pages 395-399. [On applications of group theory to household chores such as flipping a mattress.] HTML PDF [Republished in French translation as Le matelas et la théorie des groupes, *Pour la science*, Mars 2006, pages 62-66.] [Revised and updated version reprinted as Chapter 12 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Life Cycles, *American Scientist,* Vol. 93, No. 4, July-August 2005, pages 299-303. [On attempts to detect periodic fluctuations in biodiversity in the fossil record.] HTML PDF

Computing Science: Rumours and Errours, *American Scientist,* Vol. 93, No. 3, May-June 2005, pages 207-211. [Mathematical models of the spreading and extinction of rumors; a followup to “Why W?”.] HTML PDF [Reprinted in Italian translation as Errori e Dicerie, *Le Scienze,* No. 446, ottobre 2005, pages 86-92.] [Reprinted in German translation as Gerüchte und Vehler, *Spektrum der Wissenschaft,* Dezember 2005, pages 116-121.]

Computing Science: Why *W*? *American Scientist*, Vol. 93, No. 2, March-April 2005, pages 104-108. [On the Lambert W function, a candidate for a new “elementary” function in mathematics.] HTML PDF

Dennis Flanagan, 1919-2005 (obituary). *American Scientist*, Vol. 93, No. 2, March-April 2005, page 109. HTML PDF

Computing Science: Naming Names. *American Scientist*, Vol. 93, No. 1, January-February 2005, pages 6-11. [On the problem of overfull namespaces.] HTML PDF [Revised and updated version reprinted as Chapter 9 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Ode to the Code. [Following up on "The Invention of the Genetic Code," a closer look at the question of whether the code is optimal in some sense.] *American Scientist*, Vol. 92, No. 6, November-December 2004, pages 494-499. HTML PDF

Computing Science: Bugs That Count. *American Scientist*, Vol. 92, No. 5, September-October 2004, pages 401-405. [On periodic cicadas.] HTML PDF

Science Observer: *Viva la Ciencia.* (Coauthored with Rosalind Reid.) *American Scientist*, Vol. 92, No. 5, September-October 2004, pages 416-418. [Reportage on science in Cuba.] HTML PDF (Reprinted in The History of Physics in Cuba, Angelo Baracca, Jürgen Renn, and Helge Wendt, editors, Springer 2014.)

Computing Science: Undisciplined Science. *American Scientist*, Vol. 92, No. 4, July-August 2004, pages 306-310. [On collaboration and competition across disciplinary boundaries, brought about in part by computational methods.] HTML PDF

Computing Science: g-ology. *American Scientist*, Vol. 92, No. 3, May-June 2004, pages 212-216. [On the long campaign to refine measurements and theoretical calculations of a physical constant called the *g* factor of the electron.] HTML PDF

Computing Science: Small-Town Story. *American Scientist*, Vol. 92, No. 2, March-April 2004, pages 115-119. [Computational models of population dynamics in the rural landscape.] HTML PDF

Computing Science: Qwerks of History. *American Scientist*, Vol. 92, No. 1, January-February 2004, pages 12-16. [Why are we still relying on so much computing technology from 1969?] HTML PDF

Computing Science: A Lucid Interval. *American Scientist*, Vol. 91, No. 6, November-December 2003, pages 484-488. HTML PDF

Computing Science: In Search of the Optimal Scumsucking Bottomfeeder. *American Scientist*, Vol. 91, No. 5, September-October 2003, pages 392-396. [An attempt to understand the fossilized trails left by ancient seafloor creatures.] HTML PDF [Reprinted in French translation as Le parcours du ver, *Dossier Pour la Science,* No. 44, July 2004.]

Computing Science: The Spectrum of Reimannium. *American Scientist*, Vol. 91, No. 4, July-August 2003, pages 296-300. [On random-matrix theory and the Riemann zeta function.] HTML PDF [Reprinted in French translation as Le spectre du Riemannium in *Pour la science,* No. 312, October 2003.] [Reprinted in Spanish translation as El espectro di Riemannio in *Investigacion y Ciencia,* January 2004, pages 14-18.]

Computing Science: Spam, Spam, Spam, Lovely Spam. *American Scientist*, Vol. 91, No. 3, May-June 2003, pages 200-204. HTML PDF

Computing Science: The post-OOP paradigm. *American Scientist*, Vol. 91, No. 2, March-April 2003, pages 106-110. [What comes after object-oriented programming?] HTML PDF

Computing Science: On the Threshold. *American Scientist*, Vol. 91, No. 1, January-February 2003, pages 12-17. [On the survey-propagation algorithm.] HTML PDF [Reprinted in Italian translation as Ai limiti del calcolo. *Le Scienze,* Vol. 418, giugno 2003, pages 78-84.]

Computing Science: Science on the Farther Shore. *American Scientist*, Vol. 90, No. 6, November-December 2002, pages 499-502. [On the early American mathematician Robert Adrain.] HTML PDF

Computing Science: Follow the Money. *American Scientist*, Vol. 90, No. 5, September-October 2002, page 400-405. [Economic models of wealth distribution.] HTML PDF [Revised and updated version reprinted as Chapter 3 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: The World According to Wolfram. *American Scientist*, Vol. 90, No. 4, July-August 2002, page 308-312. [On Stephen Wolfram's proposal for "a new kind of science."] HTML PDF

Computing Science: Terabyte Territory. *American Scientist*, Vol. 90, No. 3, May-June 2002, page 212-216. [On the evolution of disk drives for data storage.] HTML PDF [Reprinted in German translation as Im Reich der Terabytes, *Spektrum der Wissenschaft,* Spezial Omega, December 2003, pages 47-51.]

Computing Science: The Easiest Hard Problem. *American Scientist*, Vol. 90, No. 2, March-April 2002, pages 113-117. [On the number-partitioning problem.] HTML PDF [Revised and updated version reprinted as Chapter 8 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Statistics of Deadly Quarrels. *American Scientist*, Vol. 90, No. 1, January-February 2002, pages 10-15. [On Lewis Fry Richardson's mathematical models of war and peace.] HTML PDF [Reprinted in Spanish translation as Estadísticas de los conflictos bélicos, *Investigación y Ciencia,* Mayo 2004, pages 8-14.] [Reprinted in French translation as Les morts á la guerre, in *Pour la Science,* No. 310, August 2003.] [Revised and abridged version reprinted as Killing by the Numbers, *Wired*, Vol. 10, No. 9, September 2002. HTML] [Revised and updated version reprinted as Chapter 5 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Third Base. *American Scientist,* Vol. 89, No. 6, November-December 2001, pages 488-492. [On the ternary number system.] HTML PDF [Revised and updated version reprinted as Chapter 10 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: The Computer and the Dynamo. *American Scientist,* Vol. 89, No. 5, September-October 2001, pages 390-394. [On the power consumption of computers and the Internet.] HTML PDF

Computing Science: Randomness as a Resource. *American Scientist,* Vol. 89, No. 4, July-August 2001, pages 300-304. [On a shortage of disorder in the world.] HTML PDF [Revised and updated version reprinted as Chapter 2 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Computing Comes to Life. *American Scientist,* Vol. 89, No. 3, May-June 2001, pages 204-208. [On biological computers.] HTML PDF

Computing Science: How to Count. *American Scientist,* Vol. 89, No. 2, March-April 2001, pages 110-114. [On errors in what ought to be the simplest of all mathematical processes.] HTML PDF

Computing Science: The Weatherman. *American Scientist,* Vol. 89, No. 1, January-February 2001, pages 10-14. [On the pioneering weather forecast of Lewis Fry Richardson.] HTML PDF

Computing Science: Dividing the Continent. *American Scientist,* Vol. 88, No. 6, November-December 2000, pages 481-485. [On algorithms for identifying a continental divide.] HTML PDF Animated map. [Revised and updated version reprinted as Chapter 6 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: The World in a Spin *American Scientist,* Vol. 88, No. 5, September-October 2000, pages 384-388. [On the Ising model of ferromagnets and other physical systems.] HTML PDF [Reprinted in French translation as Un monde de spins, *Pour la Science,* No. 280, Février 2001, pages 86-91.]

Computing Science: On the Teeth of Wheels *American Scientist,* Vol. 88, No. 4, July-August 2000, pages 296-300. [On number theory and the history of gear trains.] HTML PDF [Reprinted in *The Mart,* National Association of Watch and Clock Collectors, Inc., Issue No. 314, October 2003, pages 50-54.] [Revised and updated version reprinted as Chapter 7 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: “The Nerds Have Won.” *American Scientist,* Vol. 88, No. 3, May-June 2000, pages 200-204. [On the commercialization of the Internet.] HTML PDF

Computing Science: Graph Theory in Practice: Part II. *American Scientist,* Vol. 88, No. 2, March-April 2000, pages 104-109. [Applications of mathematical graph theory to very large structures, especially the World Wide Web.] HTML PDF

Computing Science: Graph Theory in Practice: Part I. *American Scientist,* Vol. 88, No. 1, January-February 2000, pages 9-13. [Applications of mathematical graph theory to very large structures, especially the World Wide Web.] HTML PDF

Computing Science: Experimental Lamarckism. *American Scientist,* Vol. 87, No. 6, November-December 1999, pages 494-498. [If acquired traits could be inherited, would we be any better off?] HTML PDF

Computing Science: Computational Creationism. *American Scientist,* Vol. 87, No. 5, September-October 1999, pages 392-396. [Is the whole universe a computer?] HTML PDF

Computing Science: The Vibonacci Numbers. *American Scientist,* Vol. 87, No. 4, July-August 1999, pages 296-301. [On a randomized version of the Fibonacci sequence.] HTML PDF

Computing Science: Seeing between the Pixels. *American Scientist,* Vol. 87, No. 3, May-June 1999, pages 202-207. [On alternative ways of representing pictures.] HTML PDF

Computing Science: The Web of Words. *American Scientist,* Vol. 87, No. 2, March-April 1999, pages 108-112. [On the lexical database called WordNet.] HTML PDF

Computing Science: E Pluribus Unum. *American Scientist,* Vol. 87, No. 1, January-February 1999, pages 10-14. [On the StarLogo programming language.] HTML PDF

Computing Science: Identity Crisis. *American Scientist,* Vol. 86, No. 6, November-December 1998, pages 508-512. [On the various meanings assigned to “=”.] HTML PDF [Revised and updated version reprinted as Chapter 11 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Bit Rot. *American Scientist,* Vol. 86, No. 5, September-October 1998, pages 410-415. [On the evanescence of digital information.] HTML PDF

Computing Science: How to Avoid Yourself. *American Scientist,* Vol. 86, No. 4, July-August 1998, pages 314-319. [On self-avoiding walks.] HTML PDF

Computing Science: Prototeins. *American Scientist,* Vol. 86, No. 3, May-June 1998, pages 216-221. [On lattice models of protein folding.] HTML PDF

Computing Science: Collective Wisdom. *American Scientist,* Vol. 86, No. 2, March-April 1998, pages 118-122. [On cooperative computing over the Internet.] HTML PDF

Computing Science: The Invention of the Genetic Code. *American Scientist,* Vol. 86, No. 1, January-February 1998, pages 9-14. [What mathematicians and physicists thought the code ought to be, before biologists deciphered the real one.] HTML PDF [Reprinted in French translation as L’invention du code génétique, *Dossier Pour la Science,* No. 46, janvier 2005.] [Revised and updated version reprinted as Chapter 4 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

Computing Science: Square Knots. *American Scientist,* Vol. 85, No. 6, November-December 1997, pages 506-510. [Knot theory reformulated on a rectilinear lattice.] HTML PDF See also a letter to the editor with a correction.

Computing Science: CAFEBABE. *American Scientist,* Vol. 85, No. 4, July-August 1997, pages 304-308. [On the Java programming language.] HTML PDF

Computing Science: The Infrastructure of the Information Infrastructure. *American Scientist,* Vol. 85, No. 3, May-June 1997, pages 214-218. [On the physical layer of the Internet.] HTML PDF

Computing Science: Can’t Get No Satisfaction. *American Scientist,* Vol. 85, No. 2, March-April 1997, pages 108-112. [On the observation of phase transitions in the NP-complete problem called SAT, or satisfiability.] HTML PDF

Computing Science: Reinventing the Computer. *American Scientist,* Vol. 85, No. 1, January-February 1997, pages 16-20. [On notions of computing that go beyond the concepts of files, programs and the desktop metaphor.] HTML PDF

Computing Science: Machine Politics. *American Scientist,* Vol. 84, No. 6, November-December 1996, pages 522-526. [On manual and automated procedures for Congressional redistricting.] HTML PDF

Computing Science: The Way the Ball Bounces. *American Scientist,* Vol. 84, No. 4, July-August 1996, pages 331-335. [On some conceptual difficulties of simulating classical physics.] HTML PDF

Computing Science: Digital Diffraction. *American Scientist,* Vol. 84, No. 3, May-June 1996, pages 210-214. [On a program for simulating optical diffraction.] HTML PDF Source code

Computing Science: Speaking of Mathematics. *American Scientist,* Vol. 84, No. 2, March-April 1996, pages 110-113. [On T. V. Raman's AsTeR system for audio formatting of mathematical writing.] HTML PDF LaTeX

Computing Science: A Question of Numbers. *American Scientist,* Vol. 84, No. 1, January-February 1996, pages 10-14. [On Neil Sloane's sequence server and Simon Plouffe's Inverse Symbolic Calculator.] HTML PDF

Computing Science: Pleasures of Plication. *American Scientist,* Vol. 83, No. 6, November-December 1995, pages 504-509. [On the paper-folding program of Michael Eisenberg and Ann Nishioka.] HTML PDF

Computing Science: Debugging Myself. *American Scientist,* Vol. 83, No. 5, September-October 1995, pages 404-408. [On how people respond when computers misbehave.] HTML PDF (Reprinted in *Here and Now: Current Readings for Writers,* edited by Gilbert H. Muller. Boston: McGraw-Hill. 1998. Pages 90-99.)

Computing Science: The Square Root of NOT. *American Scientist,* Vol. 83, No. 4, July-August 1995, pages 304-308. [On quantum computers.] HTML PDF

Computing Science: Space-Time on a Seashell. *American Scientist,* Vol. 83, No. 3, May-June 1995, pages 214-218. [On Hans Meinhardt's simulations of seashell patterns.] HTML PDF

Computing Science: A Computer with Its Head Cut Off. *American Scientist,* Vol. 83, No. 2, March-April 1995, pages 116-120. [On the computer architecture called VLIW, or Very Wide Instruction Word.] HTML PDF

Computing Science: Waiting for 01-01-00. *American Scientist,* Vol. 83, No. 1, January-February 1995, pages 12-15. [The Y2K problem, as seen from five years in advance.] HTML PDF

Computing Science: Scanning the Heavens. *American Scientist,* Vol. 82, No. 6, November-December 1994, pages 512-516. [On the Sloan Digital Sky Survey.] HTML PDF

Computing Science: The World Wide Web. *American Scientist,* Vol. 82, No. 5, September-October 1994, pages 416-420. [Back when the web was a novelty.] HTML PDF

Computing Science: The Magic Words Are Squeamish Ossifrage. *American Scientist,* Vol. 82, No. 4, July-August 1994, pages 312-316. [On the factoring of RSA-129.] HTML PDF

Computing Science: Nature’s Algorithms. *American Scientist,* Vol. 82, No. 3, May-June 1994, pages 206-210. [On algorithms for studying aggregation and similar forms of growth.] HTML PDF

Computing Science: The Network Newsstand. *American Scientist,* Vol. 82, No. 2, March-April 1994, pages 108-112. [On online publications.] HTML PDF [Revised version reprinted as The Economic Quandary of the Network Publisher, in *Scholarly Publishing: The Electronic Frontier*, edited by Robin P. Peek and Gregory B. Newby, The MIT Press, 1996, pages 121-132.]

Fermat’s Last Theorem and Modern Arithmetic. (Coauthored with Kenneth A. Ribet). *American Scientist,* Vol. 82, No. 2, March-April 1994, pages 144-156. HTML PDF

Computing Science: The Counting House. *American Scientist,* Vol. 82, No. 1, January-February 1994, pages 10-14. [On computing at Fermilab.] HTML PDF

Computing Science: Balanced on a Pencil Point. *American Scientist,* Vol. 81, No. 6, November-December 1993, pages 510-516. [On system dynamics and *The Limits to Growth*.] HTML PDF

The Science of Computing: The Wheel of Fortune. *American Scientist,* Vol. 81, No. 2, March-April 1993, pages 114-118. [On pseudo-random-number generators. Guest column, filling in for Peter Denning.] HTML PDF

Science Observer: Trails in the Trackless Sea. *American Scientist*, Vol. 81, No. 1, January-February 1993, pages 19-20. PDF

Science Observer: Have You Seen This Particle? *American Scientist*, Vol. 80, No. 6, November-December 1992, pages 533-535. PDF

## Information Age columns for *The Sciences*

The Information Age: Eureka! *The Sciences,* Vol.40, No. 6, November-December 2000, pages 11-15. [On search algorithms and search engines.] PDF (2 MB)

The Information Age: Clock of Ages. *The Sciences,* Vol. 39, No. 6, November-December 1999, pages 9-13. (Received National Magazine Award for Best Essay of 1999.) PDF [Reprinted in *The Best American Magazine Writing 2000,* edited by Clay Felker. New York: American Society of Magazine Editors, 2000, pages 98-112.] [Reprinted in *The Best American Science and Nature Writing 2000,* edited by David Quammen; Burkhard Bilger, series editor. Boston: Houghton Mifflin Company, 2000, pages 97-108.] [Revised and updated version reprinted as Chapter 1 of *Group Theory in the Bedroom, and Other Mathematical Diversions*.]

The Information Age: The Electronic Palimpsest. *The Sciences,* Vol. 33, No. 5, September-October 1993, pages 10-13. [Some thoughts on the ease of erasing and altering computer documents.] PDF [Reprinted as The Electronic Palimpsest: Digital Documents for All Occasions, in *The Norton Reader: An Anthology of Expository Prose.* Ninth edition. pages 1065-1073. W. W. Norton 1996.] [Reprinted in *Literacy, Technology, and Society: Confronting the Issues*, edited by Gail E. Hawisher and Cynthia L. Selfe, pages 286-293. Prentice-Hall, 1997.] [Reprinted in *The Uses of Language,* Oxford University Press, 1999.]

The Information Age: The Discovery of Debugging. *The Sciences,* Vol. 33, No. 4, July-August 1993, pages 10-13. [On Martin Campbell-Kelly's simulator for the EDSAC computer.] PDF

The Information Age: The Numbering Crisis in World Zone 1. *The Sciences,* Vol. 32, No. 6, November-December 1992, pages 12-15. [On the impending shortage of telephone numbers.] PDF (1.8 MB)

The Information Age: Reassembly Required. *The Sciences,* Vol. 32, No. 3, May-June 1992, pages 12-15. [On inverse mappings.] PDF (1.4 MB)

The Information Age: Paradox Lost. *The Sciences,* Vol. 31, No. 5, September-October 1991, pages 12-15. [Musings on how computer programs ought to respond when they are asked questions that have no answers.] PDF (1.4 MB)

The Information Age: Do It Yourself. *The Sciences,* Vol. 31, No. 2, March-April 1991, pages 13-15. [On computer-aided artisanship.] PDF (1.2 MB)

The Information Age: No Forwarding Address. *The Sciences,* Vol. 30, No. 5, September-October 1990, pages 8-11. [On the concept of indirect addressing.] PDF (1.6 MB)

## Theory and Practice columns and other works for *Computer Language*

Theory & Practice: Mutant languages from the LISP lab. *Computer Language,* April 1987, pages 23-26. [On innovations in formal languages derived from Lisp.] PDF

Theory & Practice: Eight diversions to keep your Cray out of mischief on a cold winter’s night. *Computer Language,* February 1987, pages 21-26. [On some computationally hard problems.] PDF

Theory & Practice: Scissors, paper, stone: a tournament of Schemes. *Computer Language,* December 1986, pages 19-29. [On a game in which random play is ideal. Also discusses first-class procedures in Scheme.] PDF

Theory & Practice: On the bathtub algorithm for dot-matrix holograms. *Computer Language,* October 1986, pages 21-32. [On patterns generated by severely oversampled signals.] PDF (4.6 MB)

Theory & Practice: Tag—You’re It. *Computer Language,* August 1986, pages 21-28. [On Emil Post's tag systems.] PDF (2.9 MB)

My Life as a Forth Interpreter. *Computer Language*, April 1986, pages. 27-33. [Fiction] PDF

A Mechanic’s Guide to Grammar: Part III: A Homemade Compiler. *Computer Language,* December 1985, pages 49-64. PDF

A Mechanic’s Guide to Grammar: Part II: Climbing the Tower of Babel. *Computer Language,* November 1985, pages 51-60. PDF

A Mechanic’s Guide to Grammar: Part I: Language in Man and Machine. *Computer Language,* October 1985, pages 27-35. PDF

## Computer Recreations columns for *Scientific American*

Computer Recreations: The cellular automaton offers a model of the world and a world unto itself. *Scientific American,* Vol. 250, No. 3, March 1984, pages 12-21. PDF

Computer Recreations: Turning turtle gives one a view of geometry from the inside out. *Scientific American,* Vol. 250, No. 2, February 1984, pages 14-20. [On turtle graphics and turtle geometry.] PDF

Computer Recreations: On the ups and downs of hailstone numbers. *Scientific American,* Vol. 250, No. 1, January 1984, pages 10-16. [On the 3X+1 problem, or Collatz problem.] PDF

Computer Recreations: On the finite-state machine, a minimal model of mousetraps, ribosomes and the human soul. *Scientific American,* Vol. 249, No. 6, December 1983, pages 19-28. PDF

Computer Recreations: A progress report on the fine art of turning literature into drivel. *Scientific American,* Vol. 249, No. 5, November 1983, pages 18-28. [On randomly generated text.] PDF [Reprinted in German translation as Leere Phrasen, *Spektrum Der Wissenschaft,* February 1984.]

Computer Recreations: Introducing a department concerned with the pleasures of computation. *Scientific American,* Vol. 249, No. 4, October 1983, pages 22-36. [On novel applications of spreadsheet programs.] PDF

## Book Reviews

Review of *The Mathematics of Various Entertaining Subjects: Research in Recreational Math*, edited by Jennifer Beineke and Jason Rosenhouse, foreword by Raymond Smullyan. *Notices of the American Mathematical Society* Vol. 64, No. 2, February 2017, pages 163-166. PDF

Review of *Doing Data Science*, by Rachel Schutt and Cathy O’Neil. *Notices of the American Mathematical Society* Vol. 61, No. 9, October 2014, pages 1068-1071. PDF

The Monodromy of Love. A review of *Love And Math: The Heart of Hidden Reality*, by Edward Frenkel. *American Scientist*, Vol. 102, No. 1, January-February 2014, pages 68-69. HTML

Review of *Figures of Thought: A Literary Appreciation of Maxwell’s Treatise on Electricity and Magnetism*, by Thomas K. Simpson. *Notices of the American Mathematical Society* Vol. 60, No. 9, October 2013, pages 1173-1176. PDF

Sparring with the Great Geometer. A review of *The King of Infinite Space: Euclid and His Elements*, by David Berlinski. *American Scientist*, Vol. 101, No. 2, March-April 2013, pages 144-145. HTML

Father of Fractals. A review of *The Fractalist: Memoir of a Scientific Maverick*, by Benoit Mandelbrot. *American Scientist*, Vol. 101, No. 1, January-February 2013, pages 60-62. HTML

A Portrait of the Economy. A review of *Grand Pursuit: The Story of Economic Genius*, by Sylvia Nasar. *American Scientist*, Vol. 100, No. 5, September-October 2012, pages 426-427. HTML

Mathematical Road Trips. A review of *In Pursuit of the Traveling Salesman: Mathematics at the Limits of Computation*, by William J. Cook. *American Scientist*, Vol. 100, No. 3, May-June 2012, page 252. HTML

Murkiness in Numerical Computing. A review of *Handbook Of Floating-Point Arithmetic*, by Jean-Michel Muller, Nicolas Brisebarre, Florent de Dinechin, Claude-Pierre Jeannerod, Vincent Lefèvre, Guillaume Melquiond, Nathalie Revol, Damien Stehlé and Serge Torres. *American Scientist*, Vol. 100, No. 1, January-February 2012, pages 84-86. HTML

Review of *Flip Flop Fly Ball: An Infographic Baseball Adventure*, by Craig Robinson. *American Scientist*, Vol. 99, No. 6, November-December 2011, page 507. HTML

Making Sense of the World. A review of *Pattern Theory: The Stochastic Analysis of Real-World Signals*, by David Mumford and Agnès Desolneux. *American Scientist*, Vol. 99, No. 5, September-October 2011, pages 420-422. HTML

A Life of Serial Self-Invention. A review of *The Price of Altruism: George Price and the Search for the Origins of Kindness*, by Oren Harman. *American Scientist*, Vol. 99, No. 4, July-August 2011, pages 337-339. HTML

Machines, Minds and Madness. A review of *The Cybernetic Brain: Sketches of Another Future*, by Andrew Pickering. *American Scientist*, Vol. 99, No. 1, January-February 2011, pages 78-81. HTML

Electrifying Language. A review of *A Better Pencil: Readers, Writers, and the Digital Revolution*, by Dennis Baron. *American Scientist*, Vol. 98, No. 6, November-December 2010, pages 506-507. HTML

The Paisley Leopard. A review of *Nature’s Patterns: A Tapestry in Three Parts*, by Philip Ball. *American Scientist*, Vol. 98, No. 4, July-August 2010, pages 351-352. HTML

Never a Dull Number. A review of * Those Fascinating Numbers*, by Jean-Marie De Koninck. *American Scientist*, Vol. 98, No. 1, January-February 2010, page 88. HTML

Viva Voce. A review of *Perfecting Sound Forever: An Aural History of Recorded Music*, by Greg Milner. *American Scientist*, Vol. 97, No. 6, September-October 2009, pages 513-515. HTML

Family Album. A review of *Mathematicians: An Outer View of the Inner World*, by Marianna Cook. *American Scientist*, Vol. 97, No. 5, September-October 2009, page 427. HTML

Crosshatching in the Crosshairs. A review of *The Grid Book*, by Hannah B. Higgins. *American Scientist*, Vol. 97, No. 4, July-August 2009, page 338. HTML

An Epistolary Episode. A review of *The Unfinished Game: Pascal, Fermat, and the Seventeenth-Century Letter That Made the Modern World*, by Keith Devlin. *American Scientist*, Vol. 97, No. 3, May-June 2009, pages 257-258. HTML

Books-A-Million. A review of *The Unimaginable Mathematics of Borges’ Library of Babel*, by William Goldbloom Bloch. *American Scientist*, Vol. 97, No. 1, January-February 2008, pages 78-79. HTML

Postscript: Monty Hall Redux. Commentary on Programs and Probabilities, review of *Digital Dice: Computational Solutions to Practical Probability Problems*, by Paul J. Nahin. *American Scientist*, Vol. 96, No. 5, September-October 2008, pages 434-435. HTML

Programs and Probabilities. A review of *Digital Dice: Computational Solutions to Practical Probability Problems*, by Paul J. Nahin. *American Scientist*, Vol. 96, No. 4, July-August 2008, pages 334-336. HTML

Art in Code. A review of *Processing: A Programming Handbook for Visual Designers and Artists*, by Casey Reas and Ben Fry; and *Vizualizing Data*, by Ben Fry. *American Scientist*, Vol. 96, No. 3, May-June 2008, pages 252-254. HTML

Semiconductor Real Estate. A review of *Understanding Moore’s Law: Four Decades of Innovation*, edited by David C. Brock, Chemical Heritage Press, 2006. *American Scientist*, Vol. 96, No. 2, March-April 2008, page 167. HTML

A Mathematician’s Trajectory. A review of *The Volterra Chronicles: The Life and Times of an Extraordinary Mathematician, 1860-1940*, by Judith R. Goodstein. *American Scientist*, Vol. 95, No. 4, July-August 2007, pages 362-364. HTML

Calculating the Weather. A review of *The Emergence of Numerical Weather Prediction: Richardson’s Dream*, by Peter Lynch. *American Scientist*, Vol. 95, No. 3, May-June 2007, pages 271-273. HTML

A Paradise of Choice. A review of *The Long Tail: Why the Future of Business is Selling More of Less*, by Chris Anderson. *American Scientist*, Vol. 95, No. 1, January-February 2007, pages 78-79. HTML

Review of *The Structure and Dynamics of Networks*, edited by Mark Newman, Albert-László Barabási and Duncan J. Watts. *American Scientist*, Vol. 94, No. 6, November-December 2006, page 571. HTML

Goodness, Gracious, Great Balls of Gaia. A review of *The Revenge of Gaia: Earth’s Climate Crisis and the Fate of Humanity*, by James Lovelock. *American Scientist*, Vol. 94, No. 5, September-October 2006, pages 458-461. HTML

Review of *Negative Math: How Mathematical Rules Can Be Positively Bent*, by Alberto A. MartÃnez, *American Scientist*, Vol. 94, No. 3, May-June 2006, page 283. HTML

Review of Martin Gardner’s *Mathematical Games* (CD-ROM edition), *American Scientist*, Vol. 94, No. 1, January-February 2006, page 88. HTML

Coping with Selfishness. A review of *Selfish Routing and the Price of Anarchy,* by Tim Roughgarden. *American Scientist*, Vol. 93, No. 6, November-December 2005, pages 567-568. HTML

Interview: Scientist’s Nightstand. *American Scientist* online, November-December 2005. HTML

Genius Unappreciated. A review of *János Bolyai, Non-Euclidean Geometry, and the Nature of Space,* by Jeremy J. Gray. *American Scientist*, Vol. 93, No. 3, May-June 2005, pages 275-276. HTML

Anthropology for Mathematicians. A review of *Symmetry Comes of Age: The Role of Pattern in Culture*, edited by Dorothy K. Washburn and Donald W. Crowe, and *Embedded Symmetries, Natural and Cultural*, edited by Dorothy K. Washburn. *American Scientist*, Vol. 93, No. 2, March-April 2005, pages 180-192. HTML

Structures. A review of *Typologies* by Bernd Becher and Hilla Becher. *American Scientist*, Vol. 92, No. 6, November-December 2004, pages 572-573. HTML

It or Bit? A review of *Information: The New Language of Science* by Hans Christian von Baeyer. *Natural History,* Vol. 113, No. 8, October 2004, pages 60-66.

Brief review of *Classics on Fractals* (edited by Gerald A. Edgar) and *Fractals and Chaos: The Mandelbrot Set and Beyond*, by Benoit Mandelbrot. *American Scientist*, Vol. 92, No. 3, May-June 2004, page 278.

Review of *Road Ecology: Science and Solutions*, edited by Richard T. T. Forman and Daniel Sperling. *American Scientist*, Vol. 91, No. 5, September-October 2003, page 454.

Review of Fibonacci’s *Liber Abici: A Translation into Modern English of Leonardo Pisano’s Book of Calculation.* *American Scientist,* Vol. 91, No. 4, July-August 2003, page 361. HTML

Resistance is feudal. A review of *Against the Machine: The Hidden Luddite Tradition in Literature, Art, and Individual Lives* by Nicols Fox. *American Scientist*, Vol. 91, No. 3, May-June 2003, pages 261-264. HTML

Review of *Knots,* by Alexei Sossinsky. *American Scientist*, Vol. 91, No. 2, March-April 2003, page 170. HTML

On the Complex Plane. A review of *Indra’s Pearls: The Vision of Felix Klein,* by David Mumford, Caroline Series and David Wright. *American Scientist*, Vol. 91, No. 2, March-April 2003, page 182. HTML

The Search for Rigor. A review of *Mechanizing Proof: Computing, Risk, and Trust.* *American Scientist,* Vol. 90, No. 4, July-August 2002, pages 382-384. HTML

Review of *How the Other Half Thinks: Adventures in Mathematical Reasoning,* by Sherman Stein. *American Scientist,* Vol. 90, No. 3, May-June 2002, page 271. HTML

Review of *Things a Computer Scientist Rarely Talks About,* by Donald E. Knuth. *American Scientist,* Vol. 90, No. 3, May-June 2002, page 271. HTML

Matter in Motion. A review of *Structure and Interpretation of Classical Mechanics,* by Gerald Jay Sussman and Jack Wisdom with Meinhard E. Meyer. *American Scientist,* Vol. 90, No. 3, May-June 2002, pages 278-279. HTML

From Motricity to Mentality. A review of *I of the Vortex,* by Rodolfo Llinás. *American Scientist,* Vol. 89, No. 4, July-August 2001, page 370. HTML

In Postmodernist Territory. A review of *Mathematics as Sign: Writing, Imagining, Counting*, by Brian Rotman. *American Scientist,* Vol. 89, No. 3, May-June 2001, pages 280-281. HTML

Review of *The 85 Ways to Tie a Tie: The Science and Aesthetics of Tie Knots,* by Thomas Fink and Yong Mao. *American Scientist,* Vol. 89, No. 2, March-April 2001, page 170. HTML

Review of *The User Illusion: Cutting Consciousness Down to Size*, by Tor Nörretranders. *American Scientist,* Vol. 86, No. 5, September-October 1998, page 477.

Review of *I Wish I’d Made You Angry Earlier: Essays on Science, Scientists and Humanity*, by Max F. Perutz. *American Scientist*, Vol. 86, No. 5, September-October 1998, page 480.

Odd Numbers. A review of *A Beautiful Mind,* by Sylvia Nasar; *The Man Who Loved Only Numbers,* by Paul Hoffman; and *My Brain Is Open,* by Bruce Schechter. *The Sciences,* Vol. 38, No. 5, September-October 1998, pages 35-40. PDF (2.5 MB)

Review of *The Java Programming Language* and seven other volumes on Java. *American Scientist*, Vol. 85, No. 4, July-August 1997, pages 389-390.

The End of Science Writing? A review of *The End of Science: Facing the Limits of Knowledge in the Twilight of the Scientific Age,* by John Horgan. *American Scientist,* Vol. 84, No. 5, September-October 1996, pages 495-496.

Review of *Mathematical Go: Chilling Gets the Last Point*, by Elwyn Berlekamp and David Wolfe. *American Scientist*, Vol. 83, No. 4, July-August 1995, pages 381-382.

Review of *Artificial Life IV*, edited by Rodney A. Brooks and Pattie Maes. *American Scientist*, Vol. 83, No. 3, May-June 1995, pages 284-285.

Review of *Macmillan Encyclopedia of Computers*, edited by Gary G. Bitter. *American Scientist*, Vol. 82, No. 4, July-August 1994, pages 390-391.

Review of *Probability and Algorithms*, by the National Research Council Panel on Probability and Algorithms. *American Scientist*, Vol. 82, No. 3, May-June 1994, pages 291-292.

Review of *Darwin Multimedia CD-ROM*, compiled by Peter Goldie and Michael T. Ghiselin. *American Scientist*, Vol. 81, No. 5, September-October 1993, page 482.

Review of *Systat* statistics and graphics software. *American Scientist*, Vol. 81, No. 3, May-June 1993, pages 303-304. PDF

Review of *The Whole Internet User’s Guide and Catalog*, by Ed Krol. *American Scientist*, Vol. 81, No. 2, March-April 1993, pages 194-195.

Review of *From Animals to Animats: Proceedings of the First International Conference on Simulation of Adaptive Behavior*. *American Scientist*, Vol. 80, No. 3, May-June 1992, pages 294-295. PDF

The Unreasonable Effectiveness of Mathematica. Review of *Mathematica* version 2.0. * **American Scientist*, Vol. 79, No. 5, September-October 1991, pages 474-475.

Desktop Tabletop Physics. Review of *Interactive Physics*. *American Scientist*, Vol. 79, No. 4, July-August 1991, pages 378-379. PDF

Mr. Wizard’s Workshop. A review of *Exploring Mathematics with Mathematica*, by Theodore W. Gray and Jerry Glynn; and *Mathematica for the Sciences,* by Richard E. Crandall. *The Mathematica Journal.* Vol. 1, No. 4, Spring 1991. PDF

Review of *LISP, Lore and Logic: An Algebraic View of LISP Programming, Foundations and Applications*, by W. Richard Stark. *American Scientist*, Vol. 78, No. 5, September-October 1990, pages 474-475. PDF

Review of *The Dreams of Reason: The Computer and the Rise of the Sciences of Complexity,* by Heinz Pagels. *The New York Times Book Review,* August 14, 1988, page 18. PDF

Review of *Quarks: The Stuff of Matter*, by Harald Fritzch. *The New Republic*, July 4, 1983, pages 37-38. PDF

Review of *The Gnostic Gospels*, by Elaine Pagels. *The American Scholar*, Summer 1980, pages 423-428. PDF (1.4 MB)

Review of *Gödel, Escher, Bach: An Eternal Golden Braid*, by Douglas R. Hofstadter. *The New York Times Book Review*, April 29, 1979, pages 13-18. PDF

Review of *The Nature of Maps: Essays Toward Understanding Maps and Mapping*, by Arthur H. Robinson and Barbara Bartz Petchenik. *The American Scholar*, Spring 1977, pages 262-264. PDF

## Chapters in Collections and Anthologies

An Adventure in the Nth Dimension. In *The Best Writing on Mathematics 2012*, Mircea Pitici, editor, Princeton University Press, 2013, pages 30–42. (Originally published in *American Scientist*, Vol. 99, No. 6, November-December 2011, pages 442-446.)

The Higher Arithmetic: How to Count to a Zillion without Falling Off the End of the Number Line. In *The Best Writing on Mathematics 2010*, Mircea Pitici, editor, Princeton University Press, 2011, pages 134-144. (Originally published as Computing Science: The Higher Arithmetic, *American Scientist*, Vol. 97, No. 5, September-October 2009, pages 364-368.)

Measure Twice, Average Once. Chapter 4.1 in *The Open Laboratory: The Best Science Writing on Blogs 2007*, edited by Reed A. Cartwright, pages 180-183. Chapel Hill, N.C.: Coturnix. [Derived from a bit-player blog item.] Book web site.

Writing Programs for “The Book.” Chapter 33 in *Beautiful Code*, edited by Andy Oram and Greg Wilson. Cambridge, Mass.: O’Reilly. 2007. [Essay derived from a bit-player blog item.] PDF preprint

Clock of Ages. In *The Best American Magazine Writing 2000,* edited by Clay Felker. New York: American Society of Magazine Editors, 2000, pages 98-112. [Original publication in *The Sciences*, Vol. 39, No. 6, November-December 1999, pages 9-13.]

Clock of Ages. In *The Best American Science and Nature Writing 2000,* edited by David Quammen; Burkhard Bilger, series editor. Boston: Houghton Mifflin Company, 2000, pages 97-108. [Original publication in*The Sciences*, Vol. 39, No. 6, November-December 1999, pages 9-13.]

The Electronic Palimpsest. In *The Uses of Language,* Oxford University Press, 1999.

Debugging Myself. In *Here and Now: Current Readings for Writers,* edited by Gilbert H. Muller. Boston: McGraw-Hill. 1998. Pages 90-99. [Originally published as Computing Science: Debugging Myself. *American Scientist,* Vol. 83, No. 5, September-October 1995, pages 404-408.]

The Electronic Palimpsest. In *Literacy, Technology, and Society: Confronting the Issues*, edited by Gail E. Hawisher and Cynthia L. Selfe, pages 286-293. Prentice-Hall, 1997. [Originally published as The Information Age: The Electronic Palimpsest. *The Sciences,*Vol. 33, No. 5, September-October 1993, pages 10-13.]

The Economic Quandary of the Network Publisher, in *Scholarly Publishing: The Electronic Frontier*, edited by Robin P. Peek and Gregory B. Newby, The MIT Press, 1996, pages 121-132. [Revised version of Computing Science: The Network Newsstand. *American Scientist,* Vol. 82, No. 2, March-April 1994, pages 108-112.]

The Electronic Palimpsest: Digital Documents for All Occasions. In *The Norton Reader: An Anthology of Expository Prose.* Ninth edition. pages 1065-1073. W. W. Norton 1996. [Originally published as The Information Age: The Electronic Palimpsest. *The Sciences,* Vol. 33, No. 5, September-October 1993, pages 10-13.]

## Selected Other Publications

Built for Speed: Designing Exascale Computers. *Topics*, Harvard Scool of Engineering and Applied Sciences, Summer 2014, pages 1–11. HTML. Also available on medium.com.

Economics, Control Theory and the Phillips Machine. *Economia Politica* a.XXVIII, numero speciale, dicembre 2011, pages 83–96. [Adaptation of “Computing Science: Everything Is Under Control.” *American Scientist*, Vol. 97, No. 3, May-June 2009, pages 186-191; based on a talk delivered 2010-12-07 at the Symposium on the 60th Anniversary of the Phillips National Income Electro-Hydraulic Analogue Machine, University of Trento, Italy.]

Cloud Computing. *Communications of the ACM*, Vol. 51, No. 7, July 2008, pages 9-11. PDF (1.7 MB)

Technopuzzlers. *Muse,* Vol. 10, No. 1, January 2006, pages 20-28. See also Also responses to “Stump the Chump” photos, *Muse*, Vol 10, No. 5, pages 46-47.

The Ghosts in the Machines. *Natural History,* Vol. 114, No. 7, September 2005, pages 36-41. PDF (1.6 MB)

A Coincidence Problem. *Chance News,* Vol. 12, No. 3 (May 2, 2003 to July 20, 2003). HTML

Spin Glass Spinoff. *News from ICTP*, Winter 2003, No. 103, page 2. [Brief report on the survey-propagation algorithm.] HTML

Killing by the Numbers, *Wired*, September 2002, Vol. 10, No. 9. [Abridged version of Computing Science: Statistics of Deadly Quarrels, *American Scientist*, Vol. 90, No. 1, January-February 2002, pages 10-15.]

Debugging the Universe. *International Journal of Theoretical Physics,* Vol. 42, No. 2, February 2003, pages 277-295. [An essay on the notion that all physics might be a computational process, derived from a talk delivered at the Digitial Perspectives conference, Washington, DC, July 2001.] PDF preprint

Case Study: J. Lyons & Co. *CIO Insight,* October 2001, pages 4-9. [An essay on the occasion of the 50th anniversary of the Lyons LEO computer.] HTML

Aftermath. *MSRI Emissary,* Fall 1999, pages 12-13. [Musings on a semester spent as journalist-in-residence at the Mathematical Sciences Research Instsiute in Berkeley.] PDF

Garbage. *Muse,* Vol. 3, No. 2, February 1999, pages 10-16. [A visit to the Fresh Kills landfill.]

Sequence A037245 in the On-Line Encyclopedia of Integer Sequences.

Turing’s Test. *Muse,* Vol. 2, No. 2, April 1998.

40,000 Points of Light. *Pixel,* Vol. 1, No. 2, May-June 1990, pages 36-41. [On a graphics language in which an image is defined as a locus of points.] PDF (2.4 MB)

Thoughts on Mathematica. *Pixel,* Vol. 1, No. 1, January-February 1990, pages 28-35. PDF (3.9 MB)

“Everything Is Under Control.” *Scientific Honeyweller*, Vol. 10, No. 1, Winter 1989, pages 4-5. [Brief essay on control theory, introducing a special issue.] PDF (640 kB)

Machine Dreams. *Discover,* Vol. 10, No. 10, October 1989, pages 82-87. [On computing as a third way of doing science.] PDF (2.1 MB)

PC Scheme Tutorial. Texas Instruments, Inc. July 1987.

Rank-and-File Thinking. *Lotus,* June 1985, pages 73-77. PDF (1.8 MB)

The HP-41C: A Literate Calculator? *Byte*, January 1981, pages 118-138. PDF (3.3 MB)

1/500,000,000,000. *The Baltimore Sun*, July 3, 1979, page A-19. [Op-Ed essay on the fall of Skylab.]