Mobius strips never cease to be cool. And this is a three dimensional one! It would also make for a great roller coaster.
given any loop (of any shape), are there four points that, when connected, form a square? (unsolved) or a rectangle? (solved and proved in this video)
topology is really cool!! and so is this video, it’s got really nice explanations and does so in a way that people with no topology knowledge can understand
PS topology was used by this year’s winners of the nobel prize in physics!!
