Heh. I’m afraid AIs of “unknown” motivations are known to be hostile from a human perspective.
I’m not sure this is what D_Alex meant however a generous interpretation of ‘unknown friendliness’ could be that confidence in the friendliness of the AI is less than considered necessary. For example if there is an 80% chance that the unknown AI is friendly and b) and c) are both counter-factually assumed to true....
(Obviously the ’80%′ necessary could be different depending on how much of the uncertainty is due to pessimism regarding possible limits of your own judgement and also on your level of desperation at the time...)
I’m not sure this is what D_Alex meant however a generous interpretation of ‘unknown friendliness’ could be that confidence in the friendliness of the AI is less than considered necessary. For example if there is an 80% chance that the unknown AI is friendly and b) and c) are both counter-factually assumed to true....
(Obviously the ’80%′ necessary could be different depending on how much of the uncertainty is due to pessimism regarding possible limits of your own judgement and also on your level of desperation at the time...)