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

Manhole Covers

There's a reason manhole covers are round. It makes it nearly impossible for a person to fall inside of one. Pedestrians almost rarely fall into manholes and it's thanks to this safety-conscious design.

Horizontal Button Holes

The top button on a dress shirt is annoying yet purposeful. While it's the most difficult to get buttoned, it serves as a grip for a tie. Even though it might be a slight choking hazard, it's for the greater good of the appearance.

The More You Know

After Hitler ordered the deportation of Denmark's Jewish population, Danish citizens organized a massive evacuation of the Jews to neutral Sweden, despite the risks. In the end, 99% of Danish Jews survived the Holocaust.
Four times more people speak English as a second language than as a native one.
There's a shrimp-like creature that makes aluminum armor to protect itself.
When a piece of bread is toasted, it's called the "Maillard reaction."

Post originally appeared on Upbeat News.