29. Freud Introduced the Power of the Subconscious
Before Freud, psychology wasn’t even recognized as a legitimate endeavor. Sure, he got a lot of things wrong, but there is one thing he got right: we are very much influenced by mental processes that we are not aware of. The idea may seem common sense now, but to people at the turn of the twentieth century, it was paradigm-shattering. We weren’t as in control of our actions as we believed.