Gedanken experiments are always fun . But for the experiment to work you must assume everything that the experiment presupposes. Suppose our thoughts were merely chemical reactions (bear with me here). Suppose also that we could monitor the chemical activity in our brain such that every single molecule were represented, in real time, by a very large hologram of our brain. What would happen? What would we discover? I see three possibilities: 1) We discover that we are all literally telekinetic, i.e. we can will the molecules of our brain to move and react as we please. As a consequence: a) We realize that our "will" has no physical component. b) We train to recognize how our thoughts (chemical reactions) will influence the molecules in the blood-brain barrier, then in the skull, then in the area surrounding our skull, and so on. We practice so much that we all become telekinetics. 2) We are able to observe patterns in the chemical reactions by concentrating on certain thoughts. This gives us the ability to label each chemical reaction by a certain thought. We could then enter the information of each molecule of our brain into a computer, calculate the chemical reactions that will occur in the future, and then observe our thoughts before we think them. 3) We are unable to observe patterns in the chemical reactions because there are no patterns. It turns out that our thoughts are not chemical reactions in our brain, and there is absolutely no physical component to our thoughts. What do you think? Which of these do you think would happen, or what other possibilities might occur?