Shouldn't we just be moving to something drastic like a massive sun shade project ASAP? Slowly on the scale of individual people, but a quick snap on geologica

Shouldn't we just be moving to something drastic like a massive sun shade project ASAP? Slowly on the scale of individual people, but a quick snap on geological time scales, a process of change was initiated in the global economic system by the widespread climactic shifts. a series of events moved the global system towards a phase change which sealed Homo sapiens' fate. No one can pinpoint the exact minute, hour, or day, but at a certain point, global civilization lost the necessary level of coordination to mount the necessary sun shade project. Just as the ancient empires lost the ability to coordinate their own defense and trade in the Bronze Age Collapse, the world lost the ability to avert the next Permian-Triassic level event. Intimations of war and shifting alliances were punctuated with alleged sabotage and contested destruction of satellites and the closing of the nascent space infrastructure. No one country felt safe letting the other country control the sunlight and the sky. Acrimony only increased when the first nuclear submarine was lost to the loss of buoyancy amidst the first spontaneous mass methane clathrate release. We luckily averted prematurely ending ourselves in nuclear fire and ash, but future generations might look back at it as a lost chance at quick mercy. Eventually, the petty geopolitical squabbles faded and almost everyone universally believed the science, but it wasn't until it was several years too late.