The world's technological capacity to store, communicate, and compute information

Science

Volumn 332, Issue 6025, 2011, Pages 60-65

  Hilbert, Martin ^a,b   López, Priscila ^c  

^a UNIVERSITY OF SOUTHERN CALIFORNIA   (United States)

^b UNITED NATIONS   (United States)

^c UNIVERSITAT OBERTA DE CATALUNYA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

COMPARATIVE STUDY; COMPUTER; EXPERIMENTAL STUDY; TELECOMMUNICATION;

ARTICLE; COMPUTER PROGRAM; HUMAN; INFORMATION PROCESSING; INFORMATION PROCESSING DEVICE; INFORMATION TECHNOLOGY; MASS COMMUNICATION; PRIORITY JOURNAL; TELECOMMUNICATION;

EID: 79953281019     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1200970     Document Type: Article

References (41)

1. M. Castells, End of Millennium, The Information Age: Economy, Society and Culture, vol. III (Wiley-Blackwell, Malden, MA, 2000).
2. D. Bell, The Coming of Post-Industrial Society: A Venture in Social Forecasting (Basic Books, New York, NY, 1973).
3. M. U. Porat, "The Information Economy: Definition and Measurement" (1977); available at www.eric.ed.gov/ERICWebPortal/ contentdelivery/servlet/ERICServlet?accno=ED142205.
4. Y. Masuda, The Information Society as Post-Industrial Society (Transaction Publishers, Piscataway, NJ, 1980).
5. C. Perez, Futures 15, 357 (1983).
6. T. Forester, The Information Technology Revolution (MIT Press, Cambridge, MA, 1985).
7. C. Freeman, F. Louçã, As Time Goes By: From the Industrial Revolutions to the Information Revolution (Oxford Univ. Press, New York, 2002).
8. M. Castells, The Rise of the Network Society: The Information Age: Economy, Society, and Culture, vol. I (Wiley-Blackwell, Malden, MA, 2009).
9. E. Brynjolfsson, A. Saunders, Wired for Innovation: How Information Technology is Reshaping the Economy (MIT Press, Cambridge, MA, 2009).
10. Y. Ito, Mass Commun. Rev. Yearbook 2, 671 (1981).
11. I. D. S. Pool, Science 221, 609 (1983).
12. M. Lesk, "How Much Information Is There In the World?" (1997); available at www.lesk.com/mlesk/ksg97/ksg.html.
13. P. Lyman et al., "How Much Information? 2003" (Univ. California at Berkeley, Berkeley, CA, 2003); available at www2.sims.berkeley.edu/research/ projects/how-muchinfo-2003/.
14. J. Gantz et al., "The Diverse and Exploding Digital Universe: An Updated Forecast of Worldwide Information Growth Through 2011" (IDC sponsored by EMC, Framingham, 2008); available at www.emc.com/leadership/ digitaluniverse/expanding-digital-universe.htm.
15. R. Bohn, J. Short, "How Much Information? 2009 Report on American Consumers" (Global Information Industry Center of University of California, San Diego, San Diego, CA, 2009); available at http://hmi.ucsd.edu/howmuchinfo. php.
16. Materials and methods are available as supporting material on Science Online.
17. International Telecommunications Union (ITU), "World Telecommunication/ICT Indicators Database" (ITU, Geneva, 2010); available at www.itu.int/ITU-D/ict/statistics/.
18. Faostat, ForesSTAT (Food and Agriculture Organization of the United Nations, 2010); available at http://faostat.fao.org/.
19. Universal Postal Union (UPU), Postal Statistics (UPU, Berne, Switzerland, 2007); available at www.upu.int/en/resources/postal-statistics/.
20. International Federation of the Phonographic Industry (IFPI), "The Recording Industry World Sales 1995-2004"; available at www.ifpi.org/content/section-statistics/index.html.
21. Japanese Recording-Media Industries Association, "Press Releases" (2007); available at www.jria.org/english.html.
22. TOP500, "TOP500 List Releases" (TOP500 Supercomputer sites, 2009); available at www.top500.org/lists.
23. J. Porter, "Disk/Trend Reports 1977-1999" (California, 2005); available at www.disktrend.com/.
24. R. Longbottom, "Computer Speed Claims 1980 to 1996" (Roy Longbottom's PC Benchmark collection, 2006); available at www.roylongbottom.org. uk/mips.htm.
25. J. McCallum, in "The Computer Engineering Handbook," V. G. Oklobdzija, Ed. (CRC, Boca Raton, FL, 2002), pp. 136-153.
26. T. Coughlin, "Digital Storage Technology Newsletters" (Coughlin Associates, Atascadero, CA, 2007); available at www.tomcoughlin.com/.
27. Global Technology Team, "Technology Q1 2006 Global Technology Data Book" (Morgan Stanley, New York, 2006); available at www.morganstanley.com/ institutional/techresearch/pdfs/global-techdatabook0306.pdf.
28. International Data Corporation (IDC), IDC Media Center (2008); available at www.idc.com/about/press.jsp.
29. C. Shannon, Bell Syst. Tech. J. 27, 379-423 and 623-656 (1948).
30. T. M. Cover, J. A. Thomas, Elements of Information Theory (Wiley-Interscience, Hoboken, NJ, 2006).
31. A. M. Turing, Proc. London Math. Soc. s2, 230 (1937).
32. T. Cormen, C. Leiserson, R. Rivest, C. Stein, Introduction to Algorithms (McGraw-Hill, Boston, 2003).
33. B. Gardiner, Wired Mag. "Astrophysicist Replaces Supercomputer with Eight PlayStation 3s"; available at www.wired.com/techbiz/it/news/2007/10/ ps3-supercomputer (2007).
34. Moore's law measures technological progress of computer performance by counting the numbers of transistors on an integrated circuit, which has approximately doubled every 2 years since the 1960s (39).
35. D. Sahal, Res. Policy 14, 61 (1985).
36. This is assuming 100 billion neurons x 1000 connections per neuron x maximum 1000 nerve impulses per second.
37. This is considering a quaternary DNA alphabet, in which each base pair can store 4 bits x 3 billion DNA base pairs per human cell x 60 trillion cells per adult human. Because base pair couples are determined, the 4 bits can be compressed to 2 bits, which can optimally be compressed to 1.73 inside one cell (40).
38. S. Lloyd, Phys. Rev. Lett. 88, 237901 (2002).
39. G. E. Moore, Proc. SPIE 2439, 2 (1995).
40. X. Chen, M. Li, B. Ma, J. Tromp, Bioinformatics 18, 1696 (2002).
41. We thank the Information Society Program of United Nations ECLAC (in Chile) for its support; T. Coughlin, J. McCallum, D. Franz, M. Gonzalez, C. Vasquez, L. Adleman, M. Castells, and the statisticians from UPU (Universal Post Union) and ITU (International Telecommunications Union); as well as numerous colleagues who motivated us by doubting the feasibility of this undertaking.