Since production is limited, diluting the kill shot, say 1/100 actually can kill you and 1/100*100 kills you fast, makes a lot of sense. Cascade it over 4 years with death growing for 40 years is a pretty easy and efficient thing to do. Replacement rates is still gonna be in the positive for a while then drop maybe in a decade or too. Slaves still slaving away as normal but no exponential growth. And hey better and smarter slaves that depends on your meds to live is a good thing.
Since production is limited, diluting the kill shot, say 1/100 actually can kill you and 1/100*100 kills you fast, makes a lot of sense. Cascade it over 4 years with death growing for 40 years is a pretty easy and efficient thing to do. Replacement rates is still gonna be in the positive for a while then drop maybe in a decade or too. Slaves still slaving away as normal but no exponential growth. And hey better and smarter slaves that depends on your meds to live is a good thing.