Once my female scholars hit 50+, I put them on Parenting in the hope they can teach some of the younger men how to parent.
In this case, my female was 60+, I put her on Parenting and exited the game only to come back and see her carrying a baby...
There was no event or time travel involved...
It doesn't really worry me, I just thought you might need to know .
Sorry if I posted this in the wrong place, feel free to delete it.
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I play Virtual Villagers because Sims is too hard.