> Cordain is not saying to avoid fat, but to avoid fatty meat,
> which is the meat of obese animals.  The reason for this is to
> get what he regards as a more natural ratio of fatty acids.

it seems the percentage of 0m-6 in tallow is 2.7%, rather less than olive
[about 7%], and substantially less than flax [about 20%].  Perhaps this
reseach [5 minutes] was too onerous for cordain to undertake, but it does
seem to undermine his position a trifle.
http://www.irl.cri.nz/teams/inorganicchem/tallow_definition.htm

andrew