oh please, you give humanity too much credit. i project like that would require world wide cooperation. humans would rather die than work together with someone who speaks another language, has a different skin color, wears a different kind of clothes.I don't think the prisoners dilemma is quite it.
combating climate change could easily be solved today but because of the "prisoner's dilemma" we don't and we won't no matter how bad it gets.
Itd be more like if one of the prisoners insisted that the prison wasn't real and even if it was, it's not worth the cost to worry about it