this is an area where a little knowledge can be exceptionally dangerous to your understanding. Combined with the mistaken drawing of waveforms as stairsteps, it can be disastrous. try to forget whatever you think you know, and just watch monty's video.

then sit back with a glass of your preferred beverage, and watch ethan wiener's longer one. you will then be innoculated against most errors of "intuition". your thinking/knowledge about this stuff is utterly incorrect (no fault of yours - this isn't trivial stuff), and if you keep guessing you'll keep guessing wrong.