I wrote a response in a thread entitled "What is the single most important thing for life to exist in the universe?" . I thought about it some more and I am wondering if this paradox is scientifically sound or is it just crazy philosophers taking physics and making into voodoo science. I hope its OK to pose this question here. My statement: You have to understand the paradox of the universe. The universe can only exist if there are sentient beings (consciousness) able to observe it. If there are no sentient beings, then the universe exists as a wave, without any form or structure. Only after sentient beings observe the universe does the wave collapse into the beautiful firmament of stars, planets, galaxies, quasars, etc. Thus, the single most important thing for life to exist is a universe that provides the right quantum laws that allow for sentient beings to evolve. That is, the gravitation strength is this and the strong force is that and the weak force is this and the electromagnetic force is that. If any of the four forces deviate by a slight bit, then the conditions of the quantum laws will not be correct for life to exist. It is the precise tuning of our laws of quantum mechanics that is the most important factor to create sentient life. There may be parallel universes that exists as only a wave function because those universes did not provide the correct quantum laws for sentient beings to evolve. Those universes are dead in the sense that they are unable to form a firmament of astronomical bodies including a sun and a planet with beautiful water and sky. There is no such thing as a "barren" cold universe unless somehow we observe it through a black hole (impossible to do). Until then, its only a wave. There are probably an infinite number of universes in the form of a wave waiting for sentient beings to observe them so they can collapse into a world of particles and matter.