“Haines said his group used a complex molecular dating technique which looks at genetic mutations that occur at a clockwise rate to determine when two species diverged.”

I’m not a scientist but I’m interested in how mutations actually occur, whether by accident or by a self adaptive process or by both, and I’m unaware of any scenario where mutations have been found that appear at a clockwise rate over time. What have I missed here, or is there a system of regularly occurring mutations somewhere in insects or elsewhere that I’m unaware of.