The Anthropic Principle Says the Universe Is the Way That It Is Because We Exist

The fact that humans exist with the capacity to observe and theorize about the universe is the explanation for the universe being the way that it is. The physics that creates the preconditions for intelligent life means that intelligent life could only ever observe this kind of universe. If there are other universes that don’t support intelligent life they will have different physics from our universe and potentially our physics are universal to intelligent life.

From The Beginning of Infinity and A Brief History of Time.

See also: