Take a piece of paper. Crumple it ... What happens in a crumpled ball stays in a crumpled ball. 'I love it that these simple-looking problems are so nasty sometimes.'"If you're not talking ...

From studies of “geometric frustration,” scientists learn how paper folds ... center of the crumpled ball, and which part will be more toward the edges? Although these are simple questions ...

It’s not just about the fingers; it’s about the paper we’re drawing on, and iPad apps built ... free environment that pretends it’s a simple pad of paper. The app doesn't include many ...

That insight, arrived at in part by balling up sheets of standard-sized A4 office paper, offers a simple explanation for the ridges and valleys that give rise to thoughts, memories and emotions.