- #1
WhyIsItSo
- 185
- 1
I have read that a valid method for prooving a statement is to assume the opposite and show a contradiction.
This tells me the assumption is an "either or". If this is not true, then that must be.
Is this always valid?
This tells me the assumption is an "either or". If this is not true, then that must be.
Is this always valid?