Gibbs Phenomenon is interesting in this aspect. My attempt to nerd snipe the post: As the time duration decreases with more sinusoids detectors will not be able to pick up the complete spike.

score 1 · canonical

It doesn’t have to break the joke! Image is sufficiently imprecise to treat x=0 and so on as y=0 and then we can match square wave perfectly!

score 1 · canonical