There is less surface around the poles, and previously ok-hot areas at the equator are now likely to become too-hot areas, so it's a net loss in this simple mod

There is less surface around the poles, and previously ok-hot areas at the equator are now likely to become too-hot areas, so it's a net loss in this simple model. A slightly more nuanced discussion upthread here: https://news.ycombinator.com/item?id=19263836 https://news.ycombinator.com/item?id=19263836