To every action, there's an equal and opposite reaction. This is a fact. Whatever the mind can truly conceive, it can achieve. We humans are capable of great things even beyond our imaginations today. Perhaps, some 800 years ago, I doubt that any human at that time would imagine the world as it is today. Therefore, to imagine the world as it will be in the next 800 years may be an almost impossible thing to do. Thanks for sharing this nice post!