Something to think about:
Always reblog.
Ten of your friends behind you. Each of them says, in a random order, a random word. Chances are, you would recognize which friend is saying which word. Think about that. The only thing touching you is the sound waves. You have unknowingly memorized thousands of peoples voices in your life simply by comparing the detailed wave of sound that hits your ear. We under appreciate how important and fucking awesome that evolutionary ability is.