How do towels stay on hooks? (physics.stackexchange.com)

I didn't realise I needed to learn about this today.

I should have went on to be a physisist.

I love questions that get blown up into giant answers.

But in this case he goes on with: "Also, we ignore the folds of the towel."

In my experience as a human, if you don't fold the towel it will fall off, it's only the combination of the fold + the answer that in general will keep it in place.