Since the observers are inside the universe itself, we must formulate a “background-independent” quantum theory of gravity and cosmology , as well as the notions of time and change, to apply to a system with no fixed background, which contains all its possible observers–perhaps even one in which the laws themselves evolve as the universe does. Lee Smolin responds to Edge publisher/editor John Brockman’s request to futurists to pose “hard-edge” questions that “render visible the deeper meanings of our lives, redefine who and what we are.”… read more