I also don't understand the "?" under probability distribution
The uncertainties within the models are swamped by uncertainties outside the model - ie whether feedbacks are properly accounted for or not.
I agree that "inference" on its own is very odd. I would have put "inference and observations (delayed feedback)".
That's an interesting point. How precise do you think we have to be with respect to feedbacks in the climate system if we are interested in an existential risk question? And do you have other uncertainties in mind or just uncertainties about feedbacks?
The first thing I thought on reading your reply was that insofar as the evidence supports positive feedbacks, the evidence also supports the claim that there is existential risk from climate change. But then I thought maybe we need to know more about how far away the next equilibrium is -- assuming there is o...
Due to my colleague, Anders Sandberg: