http://en.wikipedia.org/wiki/Anthropic_principle
https://fliptomato.wordpress.com/2008/03/18/anthropic-landscape-according-to-terry-pratchett/
"Anthropic Landscape according to Terry Pratchett 18mar08
From Terry Pratchett’s Hogfather:
Many people are aware of the Weak and Strong Anthropic Principles. The Weak One says, basically, that it was jolly amazing of the universe to be constructed in such a way that humans could evolve to a point where they make a living in, for example, universities, while the Strong One says that, one the contrary, the whole point of the universe was that humans should not only work in universities by also write for huge sums books with words like `cosmic’ and `chaos’ in the titles.
And they are correct. The universe clearly operates for the benefit of humanity This can be readily seen from the convenient way the sun comes up in the morning, when people are ready to start the day.
The UU Professor of Anthropics had developed the Special and Inevitable Anthropic Principle, which was that the entire reason for the existence of the universe was the eventual evolution of the UU Professor of Anthropics. But this was only a fomal statement of the theory which absolutely everyone, with only some minor details of a `Fll in name here’ nature, secretly believes to be true"