On 7/23/2012 4:42 AM, ronaldheld wrote:
is there any meaning to this?

"Undecidable" means that neither the proposition or its negation is provable from the axioms. Presumably the corresponding physical fact is decided, and knowable by some measurement. So it just means that no set of axioms will be able to entail all physical facts, i.e. no "Theory of Everything" will be complete (which is not at all surprising).


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