I like that answer Arnie!

Maybe the nursing mothers spend the first two years making clothes in the same fashion, but different sizes for their kids.

I tend to super-micro-manage the lazy ones. They will learn a skill or else.

Now, I don't always make them work in their skill. Sometimes I just use them to make babies once they have their skill in hopes that the trait will be passed on. A couple of times I've gotten a lazy villager to become an Esteemed Elder, though I've yet to make one a JOAT.