What is this flaw called?

TheBatman

What is this flaw called:

"Takes for granted that a hypothesis has not proven to be true is proof that it is false"

Is there a name for this?

bobjon1293

I believe that is "unproven vs. untrue."

Logically speaking, just because I am unable to prove the idea that pigs can fly, it does not necessarily mean that it is a false statement. Perhaps there is an enchanted pig somewhere in the universe who has the capacity to fly invisibly, yet none of us know it yet.

TheBatman

@yahejazi Thanks