Stuart_Armstrong comments on The Last Number - Less Wrong

4 Post author: Stuart_Armstrong 10 April 2010 12:09PM

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Comment author: Stuart_Armstrong 11 April 2010 08:57:39PM 1 point [-]

Problem is, everything collapses with one contradiction. So rigorously, there is nothing more to tell.

Now you can conceive of some sort of world in which the truths of mathematics are empirical, contingent and changeable, for instance, so that one contradiction is not much of a biggie. That would be quite fun, but, alas, I don't have time for much fiction nowadays. Maybe someone else could try?

Comment author: Johnicholas 12 April 2010 12:55:09AM 2 points [-]

There are systems (relevant logic, for example) which do not collapse under one contradiction - to some extent, the fragility of classical logic is due to very strong assumptions that were built into it about how powerful math will turn out to be before Godel's incompleteness and other undecidability results were discovered (and, at least in pop math like you and I are familiar with, they're still not really fully digested).

Charlie Stross has also written post-arithmetic-consistency sf: "Dark Integers". I'm a little surprised that Ted Chiang's story didn't contain any attempts to build devices to exploit the inconsistency.

Comment author: arundelo 12 April 2010 02:23:21AM *  4 points [-]

Charlie Stross

It's a Greg Egan story actually.

"But a few hours ago, a cluster of propositions on our side started obeying your axioms.”

Comment author: Johnicholas 12 April 2010 02:35:54AM 1 point [-]

You're right, I apologize.

Comment author: NancyLebovitz 12 April 2010 07:33:48AM 0 points [-]

And it's a sequel to "Luminous".