Actual Carbon Emissions vs. IPCC Scenarios - how far away is safety?

[cprise]

14. There are a number of species that lived through that level of warming

...in the past. Humanity is not one of them. We are not even remotely adapted for such conditions.

So then what could mitigate that? High technology? It is usually assumed by people examining the worst-case scenarios that industrial civilization will be hobbled or obliterated. That means we'd have to get through 50,000 years or more with low tech or no tech. In conditions we never adapted to. Even fairly distant cousins on our evolutionary branch never adapted to the hothouse climate.

Anyone ruling-out human extinction would have to do so on the assumption that industrial civilization stays intact even during the worst climate repercussions.

Now that is a stretch.