Reply to comment

See... I didn't take the conclusion of the discussion to be that the brain constructs the world we live in, but rather the experience of how we live in the world. Like looking through a window, our perception is mediated by this mass of tissue and will invariably lead to distortions and limitations because it is not capable of producing (or really even perceiving absolute truths).

If the brain were responsible for constructing everything in the world, how then would we account for objects that most people perceive in the same manner?

I don't mean to be condescending, or jumping the gun in course material, but the "fact" of reality is that though for the most part a verbal community largely agrees with many shared perceptions of objects and events, there is also a great deal of disagreement and error in our perception (or should I say construction?) of reality.

I also agree with you that it may be better to think of the "sky" as something the brain does, i.e. the way the brain breaks down the perception of the collection of molecules pushing constantly on our heads from above.