I haven't simmed it but we can build a fourth worker quickly in BM at size 2 working copper and cows. 3 food and 8*1.25 hammers per turn. So there's an opportunity cost in delaying growth.
Why build a warrior in Caip? BM needs to grow, so it can supply us with units.
Why build a warrior in Caip? BM needs to grow, so it can supply us with units.
I have to run.