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This may take a philosophical turn to what we are learning, but what is perception? Yes, they are inputs to our brains which gives us an idea of what out environment is. But why is it that we are taught some certain things, such as colors. Why is red, red and not green instead? Why have we been taught what some things are. And how can one define pain? I've learned that it is just action potentials traveling at a hig frequency which causes unease, but why does out body react certain ways? is it that evolution favored it? Such as, when we are in pain, why do we scream sometimes but at other instances?

For example, let us consider severely sore muscles. Sometimes a massafe helps but it hurts during the process. At the same time, it feels good - some people describe this is a "sweet" pain. is this because the body instinctively knows that although it hurts now, later on it will feel much, much better?

I know, a lot of questions - but isn't that the point?