Demonstrating absences anything beyond math's clarity and definiteness can be challenging if not impossible to say the least.

ftfy

Anyway, just a tip for future comments on the internet: I'd suggest not being an asshole in your very first reply to someone you disagree with unless there's a good reason to be, because it makes you look extremely silly if your shitty comment is actually just wrong. I wouldn't have commented in this thread at all if you hadn't been an immediate asshole to frightful_hobgoblin, but here we are.