Bertrand Russell

Bertrand "Bertie" Russell (1872—1970) was a British mathematician, liberal, pacifist, socialist,[1] philosopher and logician. He also wrote books and essays for popular audiences; a good many of these were full of his signature snark about religion. Russell's Teapot is a good example of this. Along with Gottlob Frege and Ludwig Wittgenstein, he is considered one of the founders of modern analytic philosophyFile:Wikipedia's W.svg and one of the greatest logicians of the 20th century.

Thinking hardly
or hardly thinking?
Philosophy
Major trains of thought
The good, the bad
and the brain fart
Come to think of it
v - t - e
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“”The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.
—Bertrand Russell, Mortals and Others

Mathematics

He coauthored Principia Mathematica with A. N. Whitehead (not to be confused with Isaac Newton's Philosophiæ Naturalis Principia Mathematica), which attempted to use symbolic logic to derive mathematics from basic axioms (1+1=2 is proved in Volume II). It is highly regarded by many mathematicians, but is pretty unreadable unless you have a brain the size of a planet, or no life (and that's still no guarantee). The book was an attempt to make Hilbert's Program a reality by its use of a finite and small set of axioms with which one could (in principle) derive all of modern mathematics. PM is essentially an attempt to make all of mathematics constructive.

Austrian logician Kurt Gödel eventually proved that PM is incomplete, which means that it does not have the ability to produce theorems that prove everything within its particular domain (all of mathematics in this case). The reason for this was essentially that Russell and Whitehead overlooked meta-mathematics, and did not believe (or it did not ever occur to them) that their system could be used to reason about meta-mathematical concepts. Gödel observed that you could in fact use PM with meta-mathematics, and he promptly invented Gödel-numbering, which allows one to prove things about PM itself in PM. Contrary to popular belief, he did not prove that it was "wrong", "inconsistent", "useless", or any other adjective that implies incorrect.

Other stuff

Russell's crowning achievement was having the character of Professor Yaffle from the much loved UK children's television series BagpussFile:Wikipedia's W.svg modelled on him.

On a slightly less positive note, Russell also was a JFK conspiracy theorist, who did not believe that Lee Harvey Oswald was the killer.[2] However, he was over ninety years old when Kennedy was killed so let's cut him some slack.

Well-known publications
gollark: They wrote a blog post on it.
gollark: I'll bring it up. Hold on.
gollark: They required Librem to come up with a convoluted hack to avoid exposing the fact that their thing needs firmware for DDR IO.
gollark: I don't think that means much. The RYF certification is vaguely insane.
gollark: I mostly just get cheap bad phones and replace them periodically, since even the worst ones can run a browser and Discord and simple applications fine.

See also

References
  1. "I have imagined myself in turn a Liberal, a Socialist, or a Pacifist, but I have never been any of these things, in any profound sense."—Autobiography, Vol. II, p. 38.
  2. Autobiography, Vol. III, pp. 289-301.
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