@T-Hawk's post:
It's less than 400 vs. 200: Organized religion.
They've got the Forge and OR. So the FP costs 134 base hammers, in any of their cities. Those 134 base hammers would have gotten +125% on units, for 301 hammers of units, whereas any other city would be getting 167 hammers of units. I still agree, that doing the HE + FP in the same city is inefficient, but it's 100% of the base hammers lost, not 100% of produced hammers. If they want to lose 2 extra knights to this, well, that's up to them.
It's less than 400 vs. 200: Organized religion.
They've got the Forge and OR. So the FP costs 134 base hammers, in any of their cities. Those 134 base hammers would have gotten +125% on units, for 301 hammers of units, whereas any other city would be getting 167 hammers of units. I still agree, that doing the HE + FP in the same city is inefficient, but it's 100% of the base hammers lost, not 100% of produced hammers. If they want to lose 2 extra knights to this, well, that's up to them.