Can't win them all, or any that can't think on their own...
I just had a buddy say "It occurred to me that most primitive individuals barely made it to their 40s." I gave him referenced information on the life expectancies through time (it took from the advent of agriculture to the 6th or 7th century to get back up to an average of mid 30's as it was pre ag). Then he proceeded to use this [url=http://www.raw-food-health.net/Primal-Diet.html]The Primal Diet: Where It Goes Wrong[/url] as his evidence against Paleo/Primal.