The human eye and the human brain help us process reality. How accurate is our shared perception of reality? Scientific knowledge helps us clear the rubble from the path and see things for what they are. In the last part of Growing Up In The Universe, I take you through virtual reality models in the human mind and in computers. Through them we examine the questions: How do imagination, language and technology help us discern what is real from what is not? And what does the future of the human mind and perception look like?