I think the worst part of these summits is their stated goals.
Paris intended to keep warming to 1.5 degrees by 2050 (no real plan beyond then)…but you might recall, 1.5 degrees of warming is considered the tipping point where feedback loops and natural processes outpace human inputs, meaning even if we hit zero emissions by 2050, and if everyone kept to their Paris agreement promises, and if other nations don’t continue to ramp up emissions, and if unforeseen feedback loops aren’t stronger or faster acting than predicted, we still lose control completely by 2050. That’s the best plan we have, runaway climate shifts in <30 years AT BEST….and no one seems to be living up to even that planned disaster of a plan. Emissions aren’t being cut, they’re increasing. Feedback loops are ramping up 40 years earlier than predicted. All the while, people are complaining that gas is over $3 (I haven’t seen it under $4 in decades where I live) and insisting we adopt some heavily polluting power generation instead of investing in green energy solutions. People assume, it seems, that some last minute fix will solve climate change, ignoring the fact that emissions from today are reactive in the atmosphere for between 25 and 150 years, so we needed to be at net zero 25 years ago to even start effecting the atmosphere today…and some emissions from the industrial revolution are still effecting us now. Net zero by 2050 (a pipe dream, and the best plan so far) is planning to fail completely…like turning off the blast furnace in your house when the thermometer hits 450.5 inside and thinking you can stop it from burning down.
If Covid taught us anything, it’s that there is 0% chance humans will be able to cooperate enough to tackle climate change. People were asked to simply wear a mask and distance a bit to save their lives, and enough refused to do it that the methods that worked beautifully elsewhere failed miserably to control a virus. If we can’t pull off such a simple, blatantly obvious plan against a virus, what chance is there of cooperation across the board to sacrifice enormous amounts of money and completely revamp our wasteful way of life in uncountable ways to stop something seen as a future problem by many? IMO, there so little chance of pulling it off that it’s statistically correct to say there’s absolutely no chance at all.

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