Earlier quoted context omitted.
This is also why I go into chess matches against 1400 elo players. I cannot conceive of the specific ways in which they will beat me (a 600 elo player), so I have good reason to suspect that I can win. I'm willing to bet the future of our species on my consistent victory in these types of matches, in fact.
Again, a given that AI is adversarial. Edit: In addition, as an 1100 elo chess player, I can very easily tell you how a 1600 player is going to beat me. The analogy doesn't hold. I'm in good faith asking how AI could destroy humanity. It seems given the confidence people who are scared of AI have in this, that they have some concrete examples in mind.
In any case a similar argument can be made with merely instrumental goals causing harm: “I am an ant and I do not see how or why a human would cause me harm, therefore I am not in danger.”