I used to believe that meat was more difficult to digest, but my experience
has suggested the opposite.  For me, cooked meat is one of the easiest foods
to digest.  Also, cooked food is much easier for me to digest than raw food,
so I'm skeptical of the propaganda about raw foods and enzymes.  I'll
emphasize that this is just my personal experience; some people have
reported that raw food is easier for them to digest.

Regarding the "fruit until noon" guideline, I've learned that the morning is
the absolute worst time for me to eat high-carb foods; conversely, my need
for dark meat is most acute early in the day.  I believe that the the
inconsistencies between my experience and Mr. Diamond's can largely be
attributed to inherited metabolic differences.  Dr. George Watson would have
labelled Mr. Diamond as a "slow oxidizer": someone who is adapted to a
high-carb diet, and feels best if he makes breakfast his lightest meal.  The
reverse is true for a "fast oxidizer," whose metabolic type is associated
with hypoglycemia.

Cheers,
-- Aaron Wieland

P.S.:  I'm reading "The Adventures and Sufferings of John R. Jewitt, Captive
Among the Nootka, 1803-1805."  According to Jewitt, the Nootka ate little
else other than seafood (fish, shellfish, and sea mammals) (the most
important part of their diet by far) and berries.  They also ate some game
meat and roots.  Bear flesh was eaten, but not often, because anyone who
consumed it was not allowed to eat any fresh fish for two months.
*Everything*, including the berries, were smothered with generous quantities
of fermented fish oil.  Bon appetit!