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

The Hole in a Pen Cap

You'd think the hole in a pen cap serves no purpose, but it's actually a safety precaution. For whatever reason, people love to chew their pen caps. If a child happened to swallow one, the hole in the top allows air to circulate to prevent choking.

The More You Know

There's such a thing as a fear of buttons.
All you need is tap water that's piping hot to kill weeds in the cracks of your sidewalks and driveway. Pro tip: add a tablespoon of salt to make it even more effective.
The Guinness brewery supported all of it's employees who chose to fight in WW1. They were paid half of their wages while away, and their jobs were guaranteed upon their return. The brewery also sent them care packages containing chocolate and condensed milk.
The first roller coaster was invented to stop sinful behavior.

Post originally appeared on Upbeat News.