The Pigeonhole Principle is a really simple concept, discovered all the way back in the 1800s. It has explained everything from the amount of hair on people’s heads to fundamental principles of ...

Are there two people in the world who are equally hairy? Contrary to what you might expect, this statement can be answered with a resounding yes, even without statistical analysis. For this, you need ...

Just when you thought quantum physics couldn’t get any weirder, it violates the pigeonhole principle. No, it’s not about a pigeon in a hole that is simultaneously alive and dead. The pigeonhole ...

They say a bird in the hand is worth two in the bush, but for computer scientists, two birds in a hole are better still. That’s because those cohabiting birds are the protagonists of a deceptively ...