I find their math extremely questionable. They estimate an 0.1% chance of outright human extinction every year--not just a global disaster, like a plague or a n

I find their math extremely questionable. They estimate an 0.1% chance of outright human extinction every year--not just a global disaster, like a plague or a nuclear war, but the death of every human. The only things that could really plausibly cause that are events that humans have no control over--a supervolcano, a rogue comet, a gargantuan solar flare, a nearby supernova, etc.--which means that the human race should have been wiped out about once a millennium. But here we are.