Hi Bill,

>Thus, I conclude that the purpose of the default timeout
>isn't to weaken miz3, but to better instruct beginners

Ah no, the main point was that if an inference is _not_
correct, often MESON will run for the full timeout time.
So checking proofs with errors (= all proofs when you're
not finished yet) gets very slow, and without timeout close
to infinite.  The timeout thing is just to deal with that.

I think the original Automath from the seventies had
exactly the same feature.  Typechecking in type theory _is_
decidable, but if things are type incorrect, in Automath it
takes forever to establish this (because it will endlessly
unfold all definitions: Automath didn't have opaqueness.)

Freek

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