X-Message-Number: 12812 Date: Sun, 21 Nov 1999 16:59:55 -0500 From: Jan Coetzee <> Subject: Ageing References: <> There is usually a direct relationship between an animal's development time from birth to being a mature or adult animal. If one extend the life span of an animal you will automatically increase this developmental time. This means in the case of most animals they can not survive to become adults and hence the extinction of the specie. Only the human specie can get away with that. Maybe one day humans will live a 1000 years but they will have to spend 100 years of that as teenagers. I don't think one can survive that long as a teenager. Neither could the parents handle a teenager for a hundred years. Thus the present ratio of teenage years to life span may be the optimum. Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=12812