I’ve never used Mercurial, but a simple one based on the explanations and my experience with Git:

Locating the branch a commit originated from. If a git branch has been merged into (or rebased on) main or another branch, there’s no way to tell which commit came from which branch. But sometimes I’d really like that information to figure out what prompted a certain change. Without it, I need to use external tools like a ticketing system and hope the other developers added in the necessary information.

“History is written by the victors.” - what I immediately thought of.

Huh, really? I thought there were slightly more women than men, but maybe that depends on the economies etc.

As for your second point, yes, exactly. They don’t reproduce. So it doesn’t matter if many men get one wife each, or if a few men get many wives each, the number of pregnancies won’t change, and the number of pregnancy-related deaths won’t change either. So (again), I don’t see how polygyny helps in this situation.

Edit: This first point was wrong, but the second point still stands.

Polygyny wouldn’t solve the aforementioned problem if we suppose that the birth rate of men and women is roughly the same. If one man has many wives, some of whom even die, then several other men won’t have any wives.

Wouldn’t 10d10 be something very different? Like, I can get a result of 43 with the commonly used definition of 10d10 (10 dice with 10 sides each), but I can only get multiples of 10 with the die in question.