As nuclear weapons may yet be the death of us all, they would be a sound candidate. But I think it’s utter fantasy to think that a possible technology can be anything more than delayed. Besides, once GAI (general artificial intelligence) starts freeballing it’ll inevitably stumble onto a mode of death that makes the H-bomb look like a caveman’s campfire by comparison.
If you could un-invent something, what would it be?
Being acquainted with the Law of Unintended Consequences, there isn’t a thing I’d un-invent. You start arrogantly messing in the natural progression of things, and you never know what kind of monster you’ll birth.
Once upon a time, I might have said nuclear weapons (still a strong contender for ender of our species.) Then again, who knows what kind of horrific World War III we might have had, had we not been forced to sober up a little.
Tiger Riding for Beginners 