It's been known for a long time that much of evolution happens in spurts. When the environment is fairly stable evolution is a slow refinement toward local maxi

It's been known for a long time that much of evolution happens in spurts. When the environment is fairly stable evolution is a slow refinement toward local maxima. When the environment changes there's much more selection pressure and evolution happens much more quickly. So, this one study doesn't tell us much new about the speed of evolution (because we already knew), and there's no reason to think this study will do any more to correct common misconceptions than previous science.