The Hole in Evolution
The theory of evolution is just that, a theory. It is one step beyond a hypothesis (which is just an idea), and a lot of steps below a law (like the Law of Gravity). This means it's made up of a single idea supported by some data. As the data grows, so does the confidence in the theory, until one day it's either considered disproved, giving birth to a new theory, or is accepted to same level of satisfaction (and predictability) as the law of gravity.