For example, imagine two identical cardboard boxes sitting ... What if you hang the books vertically by holding on to just one of them—can they support their own weight? Start over and ...

There are two options you should stick with when shelving your library: horizontal stacking and vertical stacking. Slanted ...

Astonishingly, it turns out to be practically impossible to separate two interleaved phone books by pulling on their ... phonebooks are pulled on vertically, part of the vertical force is ...