Former CEO of AXA, a major French insurer, famously announced that a world at +4°C would be "uninsurrable" [1].
That was 10 years ago.
It's true that most predictions about climate are wrong - most of the time, they're optimistic. (Not always, fortunately [2])
[1] https://www.leparisien.fr/economie/business/special-cop21-un...
[2] https://www.theclimatebrink.com/p/emissions-are-no-longer-fo...
+4°C is to the upper end of projections
if it did (which is not probable) happen it'd take until the end of the century
if we were to get there the entire world will be a different place; everything will have advanced so we won't be insuring our present world with our current knowledge and current tech but a future world with future knowledge and future tech
> most of the time, they're optimistic.
Evidence? Has anyone collated predictions over time and compared them with outcomes to date?
I can remember a number of specific predictions (e.g. that snow would be unknown in most of the UK by the early 2000s) that were pessimistic. Of course, I recall those because they got a lot of media attention at the time and the media reporting is biased to the most extreme predictions so its not a fair sample.