Sunday, 30 October 2016
In his Psychotechnic History:
a spaceship crew and their offspring trapped on a barbaric planet adapt to barbarism;
a women only population reproduces by parthogenesis;
a lost spaceship starts the spacefaring Nomad culture.
In his Technic History:
a spaceship crew stranded on Inkrananka become a phratry of warriors;
a food deficiency means that boys on a colony planet must practice cannibalism to reach puberty;
Kirkasanters can no longer interbreed with galactic humanity.
Humanity is not homogenized but diversified, the ultimate good from Anderson's point of view - especially when those who have had to resort to cannibalism are provided with food that makes the practice unnecessary.
I think that, in Star Trek, Vulcan should have been a small, isolated human colony.