Do I get this correctly? * climate change may lead to a "horrible catastrophe" of unknown substance with probability A * this "horrible catastrophe" may lead

Do I get this correctly? * climate change may lead to a "horrible catastrophe" of unknown substance with probability A * this "horrible catastrophe" may lead to a nuclear war with probability B * the nuclear war may lead to humanity's extinction with probability C * you are claiming that A * B * C is very close to 1 If that's right, I call bullshit. There is a ton of potential triggers for nuclear war besides climate change, we didn't have one yet and I can't see why climate change should be the biggest concern in this regard. Moreover, nuclear war is hardly an existential threat to humanity and may even cool the planet a bit.