Yes, this one. Look at our governance; look at our coordination-at-scale; look at our collective problem solving. It's abysmal, beyond hope. If we have global scale problems, we are not capable of solving them effectively. We are literally not intelligent enough to handle the problems we are creating. Between rivers of garbage and CO2 levels and war, we have proven ourselves to be woefully unintelligent at the scale needed. If we are lucky, our thin window of survival depends on getting a hell of a lot smarter, real quick.
Consider this: All that hardware that's going into those datacentres right now? In 5 years or so it'll all be on the secondary market... an influx of cheaper compute like you've never seen.