You are welcome. We could extend your observation about the earth to the universe: the universe is the way it is because had it been any other way, we wouldn't

You are welcome. We could extend your observation about the earth to the universe: the universe is the way it is because had it been any other way, we wouldn't be there to observe it (and to comment on intelligent design or the lack of it!) The term used in Physics for this is the Anthropic principle http://en.wikipedia.org/wiki/Anthropic_principle http://en.wikipedia.org/wiki/Anthropic_principle.