My main point is that we/our children will heavily feel those 2 extra degrees Celsium agreed on in Paris. But thanks for pointing out that my sources on this are skimpy.

People will die. They already do.

Source I can look up now https://www.huffingtonpost.com/entry/climate-change-lancet-public-healthus_59f7676fe4b09b5c2567dd2f

That significant amount of people died due to only 0.5 degrees of Celcius change (albeit, it's hard to distinguish deaths related to temperature drop itself rather than gases from volcanos and other reasons and whether smaller human population is the cause or the consequence). In Paris it was agreed to keep the temperature from changing no more than four times that.

I've read about about experiment like this while learning game theory. Simple Tit-for-Tat stratetgy (play what your opponent played last turn) won 3 tournaments straight. It auto-enables cooperation, (almost) whatever is your opp's strategy and if they want to exploit you - well, they can't.

You may need to think how to initialize to cooperate with yourself.