I agree with your reasoning (I'm not married to those definitions). Looking at it again, I would still say that "prescient" would be more accurate, because:

I agree with your reasoning (I'm not married to those definitions). Looking at it again, I would still say that "prescient" would be more accurate, because: 1. Omniscient is a superset that include prescient" 2. Prescient is a narrower meaning than omniscient. IOW, when describing a car, for example 1. "Automobile" can be used to describe my wife's car 2. "SUV" is a more accurate description. So I'll still go with "prescient" being more accurate, in much the same way that "SUV is more accurate.