Believe It Or Not, These Aren't Actually Design Flaws

Notebook Margins

Lines on notebook paper serve a much more important purpose than making sure your writing is straight and your work fits inside a binder. When rats were an issue back in the Middle Ages, the lines were meant to serve as a protective border that rats wouldn't chew through.

The More You Know

Keep elastic hair bands in one place—not scattered in drawers or in the bathroom sink or all over the floor. Slide them onto an empty toilet paper roll, which can then be neatly tucked into a drawer.
Alexander the Great encouraged his men to shave so enemies couldn't grab their beards during battles.
A baby can cost new parents 750 hours of sleep in their first year.
Little brown bats sleep more than any other mammal on earth.

Post originally appeared on Upbeat News.