Paleontologists have tried to turn Archaeopteryx into an earth-bound, feathered dinosaur. But it's not. It is a bird, a perching bird. And no amount of 'paleobabble' is going to change that.
The Master said, The case is like that of someone raising a mound. If he stops working, the fact that it perhaps needed only one more basketful makes no difference; I stay where I am. Whereas even if he has not got beyond leveling the ground, but is still at work, the fact that he has only tilted one basketful of earth makes no difference. I go to help him.