Murphy's Law of stacked boxes

"No matter how storage-containers are arranged in a stack, the one you want will always be on the bottom, and so you'll have to move all of the others first."

Regardless of whether you arrange a stack of boxes in alphabetical/numerical order from top to bottom or bottom to top, Murphy's Law of stacked boxes will always "get you" --- i.e., da box you'll need will always be ether da first or last one, depending on which way you stacked them, and so you'll always need to take them all down to get to da one you need.