The Möbius strip is one of those mathematical objects that feels almost magical the first time you encounter it. Made by taking a strip of paper, giving it a half-twist, and joining the ends, it looks simple—but it completely breaks our everyday intuition about surfaces. Unlike ordinary bands, a Möbius strip has only one side and one boundary. If you trace your finger along its surface, you’ll eventually return to your starting point having covered what looks like both “sides” without ever lifti