I think we're still far more likely to kill ourselves slowly than quickly, though the slow but accelerating erosion of our ecosystem could certainly accelerate

I think we're still far more likely to kill ourselves slowly than quickly, though the slow but accelerating erosion of our ecosystem could certainly accelerate things that would lead to a quicker end. Either way, 800k years feels very optimistic right now. We need to stop thinking about a trillion potential future people over a million years and start making things better for the few billion or so who will live in the next 20-100 years if those trillions are ever going to exist. We're really really bad at this near-medium horizon, endlessly shuffling the costs of our choices onto them and their children as if we can amortize it forever.