In some societies the elderly are revered.
In some societies, lying flat is a symbol of death.
In some societies, particularly Islamic ones, the wealthy bestow their largesse on religious foundations.
Could these general principles explain why A.I. appears earlier or more often in some societies?
In some societies a wife's extended family took precedence; in others it was the husband's family.
In some societies military slaves belonged to private individuals, in others to the government.
In some societies slaves were considered movable property, in others immovable property, like real estate.
Totemism exists in some societies but is important only among the Dinka.
The lifespan of someone born today could well be 100 years in some societies.
As the Taliban nightmare in Afghanistan so powerfully illustrated, women in some societies are systematically oppressed as an ideological matter.
If you look at what has to be done, in some societies, it is a different problem than in others.
