In this math problem illustrated by Gergely Dudás, a cartoon bear sits in front of a fill-in-the-blank equation, which requires figuring out which symbols go between the four numbers.

Chances are you've seen this symbol before, because it's one of the most well-known Egyptian symbols. It's called the Eye of Horus. It's been in the ...

That's because, while the principles of math aren't subject to interpretation, the symbols invented to describe it are. ... Why this divisive math problem left everyone thinking they know best.