

Mass extinction, not complete extinction.
It’s not hubris. Humans are one of, if not the most adaptable species on the planet. Unless it gets so hot that the caves become uninhabitable, we’ll squeak by.
I see it like this: If there is a way, we will find it. It’s in our DNA.
Just for clarification, I don’t think it’ll be fast. It will just be faster than without it.
Also, I think we’ll hang on to a lot because the survivor base will likely be made up of people from all walks of life. STEM Professionals, teachers, carpenters, you name it. And as long as we learned our lesson about religion, we’ll pass that knowledge on.