It’s Thursday, friend. Ever notice those tiny bumps on your keyboard’s F and J keys? They serve a legit and genius purpose. 

I’ll give you some hints for why they’re there: A) “Home base” for your fingers, B) Grip for high-speed typing, C) Braille, or D) Random factory defect we’ve all accepted. Go ahead, stare at your keyboard like you just discovered aliens. You can find the answer at the end!