Georgina,
I have to say, from my personal perspective, that is a very tough read. I started it a few days ago and had to stop. Much of what you describe is potentially quite logical, but on an emotional level, I find myself rejecting it quite vehemently. Maybe this is due to my own fairly comfortable and usually outside life, but there is a degree of sterility I sense would be quite deadening. Not to say much of current society isn't already overly sterilized, but then I try to avoid leaving the farm.
I think if I was to take one point to argue over, it would be the emphasis on survival. Now logically it would seem survival is a natural prerequisite for life, but I would go out on a limb here and argue the opposite, that so much of living is about expression and that it is this cycle of rising and falling which is most elemental. Simple survival would be like a flatline on the heart monitor. DNA is about survival. Individual lives are about pushing the boundaries as far as possible. Like a tree, the growth rings are on the outside, while the wood in the trunk is stable but prone to rot. A healthy society is often on the border of chaos and order is for the churches, schools and courts.
Regards,
John