It’s just basic physics and a function of the sheet’s thinkness. Imagine an arbitrarily thick piece of paper such that it’s impossible to fold even once. Then i

It’s just basic physics and a function of the sheet’s thinkness. Imagine an arbitrarily thick piece of paper such that it’s impossible to fold even once. Then imagine an infinitesimally thin sheet of paper and start folding. Each fold, to a reasonable approximation, doubles the thickness of the paper and it will exponentially approach the unfoldable thickness.