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Unprovability, nonvalidity, infallability

Am reading Zermelo’s 1908 paper “A new proof of the possibility of a well ordering“.  You know the one I mean … and so there, in black on white (or similar shades) he writes:

Now even in mathematics unprovability, as is well known, is in no way equivalent to nonvalidity, since, after all not everything can be proved.

he also writes:

there are no infallible authorities in mathematics

Ok, if that’s not enough, what is?

Politicians, take note …

Cheers  … The best is yet to come …

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