These are obvious problems to someone who has studied enough math/geometry/calculus to know how one form of "adding boxes together gets a curve" and another "adding boxes together does NOT get you a curve".
Are visual proofs meant for someone who hasn't studied math? I wouldn't expect them to prove anything to someone who hasn't. Any proof that's incorrect could reasonably fool a layman.
Are visual proofs meant for someone who hasn't studied math? I wouldn't expect them to prove anything to someone who hasn't. Any proof that's incorrect could reasonably fool a layman.