ChristianKl comments on Rationality Quotes March 2012 - Less Wrong

4 Post author: Thomas 03 March 2012 08:04AM

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Comment author: ChristianKl 03 March 2012 06:35:23PM 0 points [-]

Didn't Gödel show that nobody can derive all of mathematics in solitude because you can't have a complete and consistented mathamatical framework?

Comment author: NancyLebovitz 03 March 2012 06:42:54PM 1 point [-]

Goedel showed that no one can derive all of mathematics at all, whether in solitude or in a group, because any consistent system of axioms can't lead to all the true statements from their domain.

Anyone know whether it's proven that there are guaranteed to be non-self-referential truths which can't be derived from a given axiom system? (I'm not sure whether "self-referential" can be well-defined.)

Comment author: Eugine_Nier 04 March 2012 12:44:23AM 1 point [-]

Anyone know whether it's proven that there are guaranteed to be non-self-referential truths which can't be derived from a given axiom system?

It is. At least, it's possible to express Goedel statements in the form "there exist integers that satisfy this equation".

(I'm not sure whether "self-referential" can be well-defined.)

It can't.