The hand is irrelevant here from a design perspective. The hand crafted a closed system (pizza box) which is analogous to any real closed system (ie. an ocean)

The hand is irrelevant here from a design perspective. The hand crafted a closed system (pizza box) which is analogous to any real closed system (ie. an ocean) and added random energy to it. The result is a perfect stack every time, not due to design but structural determinism.