“Did you know you can’t fold a piece of paper in half more than eight times?” Delaney says. “You serious? That can’t be right. What about a super thin piece of paper that’s, like, a mile wide.” “Nope. And if there were a way to fold a piece of paper in half one hundred and three times, it would be as big as the universe.” “Is that true?” “Yep. Exponential growth.”