This is one of those books that makes you think about things you never have to think about. Like why someone looks happy or what does it actually mean to pay attention? A lot more on the pyschology side than the neuroscientific side, this book explores many everyday phenomena that we miss on a regular basis.

Not only does Johnson explore our reactions to our own experiences, but he also tries to explain why, evolutionarily speaking, we function that way.

An interesting look into the biggest biological mystery.