Is the source of reality internal or external? Are we in reality or is reality in us? If a tree falls in the woods, and there is nobody around to hear it, does it make any noise? Modern theoretical physics is beginning to garner evidence showing that everything from sand to spoons to even electrical activity, including the kind that happens inside our brains to make them work, all consist of various arrangements of the same basic thing or possibly things. A google search on 'string theory' will garner some fascinating reading. If the only thing truly external to our existence is this stuff that makes everything, is the process that makes it into spoons or clothes or thoughts internal to the human mind or external and beyond human control? Is this stuff that makes everything actually internal to the mind as well? Whats your take on reality?