Imagine that you are recentley kidnaped and you are put in a room completley made out of steel (the walls, cieling, and floor). The only thing you have is a operating phone. You call for pizza, and ask them to hand deliver the pizza to you. You get the delivery, and you eat the pizza. But, the only question is how does it taste. Hint: There are no doors or windows.
Answer
It doesn't because you imaged every thing i said.