That paper wholly fails to even mention the comet strike, except a single references entry to a 2007 paper. Its heavy reliance on Todd Surovell, a Clovis-first

That paper wholly fails to even mention the comet strike, except a single references entry to a 2007 paper. Its heavy reliance on Todd Surovell, a Clovis-first holdout, tells us all we need to know. We have no reliable data about human population levels in North America, so nothing to correlate to extinctions.