Most people assume that scientists really know how old the rocks are.
The truth is, they don't. The more you study about the various methods for determining the age of the rocks, the more you will realize how unreliable those methods are. The accuracy of these dates is important because they are used to establish the theory of evolution. If these dates are wrong, then the theory of evolution is wrong. 1 Skull 1470 was discovered by Richard Leakey in 1967.