Q. So I need to make peace with false antecedents, and perhaps
you can help me by giving me a little perspective. Is a truth value
assigned to F->F merely because it doesn't matter one way or another,
and choosing the value T makes it easier to prove things? Have there
been logicians or mathematicians who have gone the other way?
A. I am not aware of any mathematician or philosopher who
defined F->F differently. Start with a two statements
p(x),q(x) such that q(x) is a consequence of
p(x). (For example, take p(x) = "x is divisible
by 10" and q(x) = "x is even".) Then it should be the
case that (forall x)[p(x) -> q(x)].
In order to make that work we need to define F->F = T.