Obviously, these scientists mathematical models make it “impossible” for the events in this book to have caused the extinctions. Or, perhaps they should also run mathematical models on the probability of one of the trillion objects in the Oort cloud being bumped into an earth intersecting orbit over time. Of course, Clovis was first, because almost nobody bothered to dig any lower, and if they did and found something they were afraid of being ridiculed by the scientists with the difinitive answers. Ah, where are the inquiring minds when we need them.
:’)