This contains the massive assumption, which is repeated throughout every economic textbook I've ever seen, that staying at home taking care of kids doesn't coun

This contains the massive assumption, which is repeated throughout every economic textbook I've ever seen, that staying at home taking care of kids doesn't count as labor or economic activity. The free labor donated to the economy by stay at home moms and dads would throw off everyone's equations if they ever bothered to count it.