> we need to be very careful when inspecting visual proofs This is not a visual proof but a nice visualization, like a written explanation that is not a proof.

> we need to be very careful when inspecting visual proofs This is not a visual proof but a nice visualization, like a written explanation that is not a proof. For an actual novel proof, nobody would imagine that they could eyeball it for a few minutes and conclude it was complete, correct, and consistent - maybe with the exception of professional mathematicians examining for simple proofs. You might eyeball it and follow its logic and not see any immediate flaws, but that's different.