Multiple minds

Most people grow up with one and only one voice in our heads. It's the one that talks when we talk to ourselves. (If you have more than one voice, time to check in with a doctor). It's easy, then, to assume that this is the mind, that we have just one, one brain, one voice, one thing going on at a time.

We can demonstrate that this isn't actually true. There's the mind that gets nostalgic or excited at a photo or a smell or a sound. There's the mind that keeps us breathing. There's the mind t...