The Internet is full of cats, fails, and Harlem Shake dance videos, but there’s more than just time wasting on YouTube. Super nerd Vsauce serves up science-based educational videos every week to his more than 2.3 million fans

Who knew there were that many people online interested in actually learning something?

In his newest episode, he asks the enlightening question, “Is Your Red The Same As My Red?

Think about it. We all experience color in our minds. But two people who both agree a color they see is ‘red’ may actually be experiencing it in very different ways.