(Psychological Paradox & Puzzles — 2)
The Paradox of Changing Yourself
If you think brain activities underlie all our thoughts, our feelings, our actions, and so on, here is a paradox: I can influence your brain (say through my words to you), and you can influence mine, but it seems impossible for me to influence my own brain or for you to influence yours. Why? Because if you think you are doing something to influence your own brain (maybe telling yourself happy words to make your brain have a different chemistry), it is your brain making you want to do the thing in the first place, it is your brain that lies behind your actually doing it, and it is your brain that causes you to be aware you are doing it. Similarly, if a man is strong enough and big enough, maybe he could lift any human being on earth, but he could never lift himself.