> As a demonstration of the principle, consider two contradictory statements—"All lemons are yellow" and "Not all lemons are yellow"—and suppose that both are true.
I am not understanding why we are freely supposing both are true?
I am not understanding why we are freely supposing both are true?
> You can change "suppose both are true" to "suppose the rules of a logical system permit stating both are true".
It's calling out a potential flaw in the system and whether we want to do anything about it.