... indeed the same person we were five years ago. Biologists would perhaps suggest that we are simply a complex series of matter brought about by evolutionary processes. Our thoughts are nothing more than chemical reactions in the complex matter of our brains and there is no distinction between our thoughts and our bodies. Our brains are simply parts of our bodies, but we are under the illusion that the two entities are different. This theory is hard to reject, we may think our thoughts are independent but there are cases when it is clear our thoughts are governed by our bodies. When we use mind-altering drugs, our views of the world can change due to the different chemicals in our brains. We may start seeing things that aren't there but we are convinced they are. If it is possible for this to happen, then surely our minds are simply parts ...

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