Fold a single piece of paper perfectly in half, from left to right. How many creases will there be after the 10th fold, when you continue folding so that all the rectangles are folded into two halves each time?
If one actually attempts to perform this experiment, it will become apparent that folding 10 times is impossible (this experience is important; see Figure 4).
However, folding from the start, when the number of folds is still small and folding is still easy (thinking that simplifies),