Yes (although not for CS majors, this is very math heavy). For all of the top answers I went through, I think most math majors have believed it, know someone wh

Yes (although not for CS majors, this is very math heavy). For all of the top answers I went through, I think most math majors have believed it, know someone who has believed it, or could at least plausibly see how someone could believe it. To the question of how advanced these are, with only a few exceptions, the majority of things there are covered in undergraduate analysis, algebra, and topology courses.