It’s quite hard to follow what you mean there so I’ll assume the extra detail is correct. If you wanted to model more detail think about the growth of the effec

It’s quite hard to follow what you mean there so I’ll assume the extra detail is correct. If you wanted to model more detail think about the growth of the effect if those children have children. That really starts to drive down that percentage. My point was to show roughly that worrying about the cost of productivity loss when having children is the only way to sustain human productivity doesn’t add up.