Droughts often prevent multiplication.
True. Hopefully this reality provokes innovation (like aqueducts and irrigation) rather than the worship of Moloch.
Can we really refer to ancient technology like aqueducts as innovation? I mean, they were in use in the 3rd century BC.
Yes, of course: the men of the day saw a problem and then innovated to overcome it. Innovation is a timeless human attribute and capability -- which is why we need more people in the world to innovate and not less (per the depop psychopaths). There is are no "limits to growth" in this age.