- Maybe there's something in evolution that makes almost all organisms really horrible.
- Maybe organisms that are prudent enough to not blow themselves up are prudent enough to leave us alone. But why would prudent people leave us alone?
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Part of that idea is that if aliens intervene to stop us blowing ourselves up, they might have to keep intervening for ever, because if we're the kind of thing that's inclined to blow ourselves up then we'll keep being that kind of thing.>>> - these two paragraphs are the bit that I've never seen anywhere else.
But why don't they change us? Don't know. That's back to alien psychology. Two options here:
1. There might a single DOMINANT alien culture in our part of space, with a psychology of not wanting to have to keep intervening, and stopping other aliens from intervening.
2. It might be that we've shifted the burden of proof, because why should aliens care about keeping us alive enough to keep intervening?