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Physics, Math, and Sociology

June 8, 2017

Physicists consider themselves to be at the top of the scientific food chain. This is verified by the fact that the majority of the nineteen Presidential Science Advisors were physicists. Notable physicist-advisors include Isidor Rabi (1898-1988), David Allan Bromley (1926-2005), Frank Press (b. 1924), and Guyford Stever (1916-2010).

A noted chemist, George Kistiakowsky (1900-1982), somehow broke into these ranks. The first Science Advisor, Vannevar Bush (1890-1974), was an electrical engineer, as was Oliver Buckley (1887-1959). I wrote about Vannevar Bush and Guyford Stever in previous articles (Basic Research, October 22, 2010, and H. Guyford Stever, May 18, 2011).

Auguste Comte's ranking of sciences

Auguste Comte's ranking of sciences.

This ranking places the more phenomenological disciplines towards the bottom.

(Created using GIMP and Inkscape from a Wikimedia Commons image by Wolfgang Sauber.)

Auguste Comte (1798-1857), considered by many to be the first philosopher of science, actually placed physics somewhat in the middle of the sciences, with astronomy and mathematics holding the places of most esteem (see figure).[1] His ranking placed the more phenomenological disciplines towards the bottom, and the more fundamental disciplines at the top. Comte considered the topmost sciences to be more advanced, with a progression of complexity from the top to the bottom. For example, the laws of chemistry depend on the laws of physics, and not the other way around. This ranking, with astronomy lumped together with physics, persists today, as the following cartoon illustrates.

Pure science, xkcd comic no. 435

A cartoon from Randall Munroe's xkcd Comics, licensed under a Creative Commons Attribution-NonCommercial 2.5 License. (xkcd comic 435.)

Physicists use a lot of mathematics, and most would agree with Comte's scheme of ranking mathematics as more fundamental than physics. This, however, presumes that physics and mathematics are both research disciplines, so we arrive at the very fundamental question of whether mathematics is discovered, or invented.[2] Plato, and contemporary mathematician, Roger Penrose, believe that mathematics is discovered, as do I, so I'm in good company.

Pi, the ratio of the circumference to the diameter of a circle, is found in many fundamental equations of physics, so it appears that pi has a physical reality independent of an observer. If you're a mathematician in the discovery camp, you do mathematics by looking for solutions that already exist. The mathematics is somewhere, waiting to be discovered; that is, the pure idea has an existence, which is a Platonist concept. Those mathematicians in the invention camp believe that mathematics is just another intellectual product of human culture.

An interesting anecdote about the attitude of mathematicians to physics involves Werner Heisenberg (1901-1976), who was awarded the 1932 Nobel Prize in Physics "for the creation of quantum mechanics." Heisenberg had initially wanted to become a mathematician, so he interviewed to become a student of Ferdinand von Lindemann (1852-1939).

Figure caption

Ferdinand von Lindemann (1852-1939), left, and a 1927 photograph of Werner Heisenberg (1901-1976), right. ( and von Lindemann photograph and Heisenberg photograph via Wikimedia Commons, modified for artistic effect.)

Lindemann, who was famous for proving that pi was a transcendental number, was 68, somewhat deaf, close to retirement, and the quintessential grumpy old mathematician. When Heisenberg told him that he had read Hermann Weyl's, "Raum, Zeit, Materie" (Space, Time, Matter),[3] Lindemann told him that his mathematics career was hopelessly contaminated. Heisenberg ended up as a student of theoretical physicist, Arnold Sommerfeld, who also had provoked Lindemann's disdain.[4]

The wide gap between physics and sociology has been bridged; and, like most bridges, the traffic has been bidirectional, in sociology investigating physics, and physics advancing sociology. The social structure of the occasional isolated Amazon tribe might be interesting, but how much more interesting is the culture of nearly a million physicists?[5] This is the realm of the field of the sociology of scientific knowledge. Prominent sociologists in this field include Paul Feyerabend (1924-1994), Thomas Kuhn (1922-1996), and Derek John de Solla Price (1922-1983). I wrote about Kuhn in a previous article (Fifty Years of Paradigm Shifting, February 25, 2013. As one example, sociologists embedded themselves at CERN during the early years of the Large Hadron Collider, a 10,000-person physics project.[6]

In the other direction we have social physics in which physicists use their tools to develop a better understanding of the human condition. Comte, whom I mentioned above, believed that social physics could discover the natural laws of social culture. Belgian statistician, Adolphe Quetelet, wrote a 1835 book, "Sur l'homme et le développement de ses facultés, ou Essai de physique sociale" (Essay on Social Physics: Man and the Development of his Faculties), in which he proposed the application of statistics to sociology. He was essentially looking for the root causes of cultural attributes such as crime. He also proposed the idea of the average man who sits atop the bell curve.

Figure caption

A tale of two Webers. Left, Wilhelm Eduard Weber (1804-1891), and right, Maximilian Karl "Max" Weber (1864-1920). Wilhelm Weber was a German physicist who co-invented the electric telegraph with colleague, Carl Friedrich Gauss (1777-1855). He was also the first to use the letter "c" to denote the speed of light in an 1856 paper co-authored with Rudolf Kohlrausch (1809-1858). The unit of magnetic flux, the weber, is named after him. Max Weber, one of the first sociologists, proposed that there are multiple causes for any outcome. He is best known for conflation of the Protestant work ethic, the rise of capitalism, and the institution of the rational nation-state. (Left image and right image via Wikimedia Commons.)

The prolific science writer, Philip Ball, has written a book that demonstrates how systems theory can elucidate such social phenomena as traffic flow, economics, and the structure of cities.[7] Social physics is now enabled by "big data," harvested from various Internet sources, that combines data from such human activities as Facebook posting, web browsing history, and credit card purchases. A recent example of a social physics paper can be found in ref. 8.[8] If you look at the lower right-hand corner of this page, you'll see that Tikalon supports the Electronic Frontier Foundation in putting limits on how much of our personal data is shared.

Of course, there's still much about sociology that makes it a far different science than physics. Any cursory examination of introductory textbooks in the two fields will show a vast difference in the number of references - About a hundred for physics, versus nearly a thousand in sociology, with physics references going back many years, and the sociology references much more contemporary.[9] Also, physics textbooks will have about the same content from one to another, while sociology textbooks are quite different from one decade to the next.[9] Physics speaks of fundamental laws, while sociology is always searching for its path.


  1. Auguste Comte, Stanford Encyclopedia of Philosophy, October 16, 2014.
  2. Julie Rehmeyer, "Math Trek-Still debating with Plato," Science News, April 25, 2008.
  3. Hermann Weyl, "Raum, Zeit, Materie - Vorlesungen über allgemeine Relativitätstheorie," J. Springer (Berlin, 1919), 296 pp., via archive.org.
  4. David Lindley, "Uncertainty," Knopf Doubleday Publishing Group, February 12, 2008, p. 79, via Google Books.
  5. Charles Day, "One million physicists," Physics Today, April 17, 2015, DOI:10.1063/PT.5.010310.
  6. Zeeya Merali, "The Large Human Collider," Nature, vol. 464, March 24, 2010, pp. 482-484, doi:10.1038/464482a.
  7. Philip Ball, "Why Society is a Complex Matter," Springer, June 9, 2012, ISBN 978-3-642-28999-6.
  8. Matjaz Perc, Jillian J. Jordan, David G. Rand, Zhen Wang, Stefano Boccaletti, and Attila Szolnoki, "Statistical physics of human cooperation," arXiv, May 19, 2017
  9. Stephen Cole, "The Hierarchy of the Sciences?," American Journal of Sociology, vol. 89, no. 1 (July, 1983), pp 111-139, https://doi.org/10.1086/227835.

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