Thanks for the kind response. I now see that the final average core temperature should remain the same, but I'm less sure about the surface temperature. There

Thanks for the kind response. I now see that the final average core temperature should remain the same, but I'm less sure about the surface temperature. There are a lot of complex processes involved, and I'm not sure that one can conclude that everything cancels out to keep the answer constant. I respond late to offer a link (that's hidden on the second page of this thread) that I think presents that argument I was trying to make better than I managed to: https://physics.stackexchange.com/questions/370446/is-randall-munroes-what-if-xkcd-correct-that-magnified-moonlight-cant-get-th/370600 https://physics.stackexchange.com/questions/370446/is-randal.... I thought the comments on the answer were a helpful reframing of the problem.