So as far as I can tell, there are two penalties for hitting zero food:
-Pop Happiness (which does not effect Hiveminds)
-Pop Growth Reduction (-75%)
The latter point seems crippling right until you figure out that buildings/jobs with food required in their upkeep costs seem to function just fine without food. And you still get the +33% bonus to pop growth from the "Nutritional Plenitude" policy even if there's no nutrition available at all. So, that's a 33% bonus from the policy, 25% bonus just for being a hivemind, and 25% bonus for the "Spawning Pool" building and the job it produces.
So a STARVING hivemind still has a growth rate 8% above the baseline.
Does it matter HOW MUCH I'm starving? Is the starvation penalty identical at -5 food as it is at -100 food?
I don't see a good reason to keep my farms open at all. Switch them all to generators and mines.
-Pop Happiness (which does not effect Hiveminds)
-Pop Growth Reduction (-75%)
The latter point seems crippling right until you figure out that buildings/jobs with food required in their upkeep costs seem to function just fine without food. And you still get the +33% bonus to pop growth from the "Nutritional Plenitude" policy even if there's no nutrition available at all. So, that's a 33% bonus from the policy, 25% bonus just for being a hivemind, and 25% bonus for the "Spawning Pool" building and the job it produces.
So a STARVING hivemind still has a growth rate 8% above the baseline.
Does it matter HOW MUCH I'm starving? Is the starvation penalty identical at -5 food as it is at -100 food?
I don't see a good reason to keep my farms open at all. Switch them all to generators and mines.