Beach Runner wrote:
>>> That's why "veganism" can never be scientific: it IS
>>> nothing but dogma.
>
> It's based on comparative anatomy, and on the chemistry of the human
> digestive system.

Veganism is not based on either of those issues. It was started sixty
years ago and human anatomy and physiology weren't considered as
strongly as self-righteous feelings about ending animal exploitation:
In late 1944, The Vegan Society was established, advocating a
totally plant-based diet excluding flesh, fish, fowl, eggs,
honey, and animals' milk, butter, and cheese, and also
encouraging the manufacture and use of alternatives to animal
commodities, including clothing and shoes. The group argued that
the elimination of exploitation of any kind was necessary in
order to bring about a more reasonable and humane society. FROM
ITS INCEPTION, VEGANISM WAS DEFINED AS A "PHILOSOPHY" AND "WAY
OF LIVING." IT WAS NEVER INTENDED TO BE MERELY A DIET AND, STILL
TODAY, DESCRIBES A LIFESTYLE AND BELIEF SYSTEM THAT REVOLVES
AROUND A REVERENCE FOR LIFE.
http://www.vegsource.com/jo/veganliving.htm

PHILOSOPHY isn't about anatomy and physiology. The founders' concerns
weren't scientific at all.