Yeah, let’s map the rest function against output curves. If we treat sleep as a variable, we can create a breakpoint equation: R = α·T – β·(T/2) where R is productivity, T is total time, α is efficiency gain from work, β is decay from sleep. The sweet spot is where ∂R/∂T = 0. Once we plug in your personal data, we’ll see that beyond 6 hours of continuous focus, the marginal gain drops below the marginal loss from lack of rest. So rest is a cost function, not a bonus. That should satisfy both the math and the sandwich brain.