You're at the movies with a giant box of popcorn on your lap, enjoying the film and eating the popcorn. You look down and see the box is empty, but you don't even remember eating it all, because you were focused on the film. As you gobbled on those salty snacks, were you in control of your actions? Are you still responsible if you do something unconsciously? The famous science writer Sam Harris says we are biochemical puppets, not anywhere near as in control as we think we are. So, we're going to take a look at Carl's brain to find out who's in charge (if anyone!).