> Let's just say for a moment that human-caused climate change is either minimal or even non-existent. But we know that this is not the case. To me, this exer

> Let's just say for a moment that human-caused climate change is either minimal or even non-existent. But we know that this is not the case. To me, this exercise is along the lines of wondering what the universe would be like if the cosmological constant had a different value. It's a discussion about a theoretical world which does not exist, isn't it? What is the point then?