TheGlyphstone wrote:, Thuselas never exist except in Milla+Dick's descendants (easily rendered extinct by one generation being only male children).
You know, I've wondered why they never thought of using the same technique as Milla used on Dick. You take a terminally ill patient and give them a shot at immortality. Milla and Dick donate blood once every 6 weeks, one unit of blood is about 1/2 liter so every 6 weeks you have about 500 doses for the terminally ill. Within a fairly short time, you would have a fairly large population of Thuselas, enough to dose all terminally ill.
Lets play with the numbers. With a world population of 7 billion, that means that about 100 million die each year. Dosing say 50 million (got to account for accidents) with a 1 in 1000 success ratio would yield 50,000 Thuselas. Not a very rapid increase, but it would have plot possibilities.