Molecular clock - right twice a day?

2006 and 2007 have been years in which a number of key science papers addressed things we know - that ain't so. One story is the serious challenges to the long contested "molecular clock" theory.

[ ... ]

In the science literature, many adjustments are offered to make the fossil record and molecular data match. Of course, some adjustment is certainly inevitable, but after a while a question arises. One can live with a clock that is routinely ten minutes slow. But if it is variably slow, slower at some times than others, there may come a point when one asks, why consult a clock anyway? Or, more to the point, should this device properly be called a clock?

Read the rest here.

Note: I disabled comments for this post. Until the Comments thing at Design of Life is fixed, go to Uncommon Descent if you want to comment.