Oh, I know a LOT of scientists who don't want to know an important fact or two!
Fact 1: The genetic clock of a species and its line of ancestry is NOT automatically the same as its generation to generation mutation rate, and cannot be assumed to be so.
Fact 2: The 1,500 fossil individuals known form Africa between 2 & 4.5 million years old, all supposed to be nearer the human lineage than the chimp or human lineage, are not. Many are chimp or gorilla ancestors.