Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 28/07/2026My wife just folded a fitted sheet while we were talking, like it was no big deal. Like she wasn’t proving a mathematical impossibility. 2321
Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 28/07/2026(Sphere eversion is a mathematical construction where one turns a sphere inside out without introducing cuts or sharp creases. Here is a marvelous explainer by @rreusser.bsky.social. The animated procedure is carried out step-by-step as you scroll down the page.)rreusser.github.ioSphere Eversion 7245
Jim Simons @pippinsboss.bsky.social · 28/07/2026I remember seeing, and briefly understanding, a description in the Scientific American many years go. The diagrams were obviously much lower tech, but very clear and beautiful. 100
Anne-Marie W. Clark 👩👧👦🐶⚖️😷🌎🚢📚🌦️⚜️ @amwclark.bsky.social · 28/07/2026Yep. Folding a fitted sheet by tucking all the corners into one, then fold. And sewing a garment inside out, so it works right when you turn it right side out. Right! 010
Maija @maijasauna.bsky.social · 28/07/2026Some time ago, Isaw a gif? I think? Or perhaps a diagram? created by @himmapaan.bsky.social which elegantly explained the mechanics of folding a fitted sheet and I have enjoyed enormous satisfaction in folding fitted sheets ever since. 150
leigh7911.bsky.social @leigh7911.bsky.social · 28/07/2026That is a really cool animation. I understand none of it, but it was fun. I also 'fold' fitted sheets by stuffing them inside one of the pillowcases that it goes with. 000
MLF @marklfilteau.bsky.social · 28/07/2026I can believe sphere eversion before I can believe Banach-Tarski. We're starting to get into the White Queen and Alice territory now. 000
