Only stable if the whole society can force itself to not even want to expand.
If 1 per billion wants to expand, out of a population of 8 billion, you have 8 expansionists. If each of them breaks the social conventions and have twice as many offspring as the sustainers (and if the desire is heritable), after 30 generations they’re now equal in number to the sustainers. Cambridge University is in the order of 30 generations old.
If 1 per billion wants to expand, out of a population of 8 billion, you have 8 expansionists. If each of them breaks the social conventions and have twice as many offspring as the sustainers (and if the desire is heritable), after 30 generations they’re now equal in number to the sustainers. Cambridge University is in the order of 30 generations old.
https://isogg.org/wiki/How_long_is_a_generation%3F_Science_p...