A New Approach: The Multiverse What if?there is a ?cosmic machine? out there that is churning out universes in huge numbers and they are all different. Our Universe is the way it is because it is one of the few whose parameters are in the range to support our kind of life. Example: Why is the radius of the Earth approx. 4,000 miles?
limit of cosmic knowledge : Talk by Sandra M. Faber on 11-Dec'12