Comment Re:Duh (Score 1) 311
Saying "it is probably the case that it is [100%] true " is pretty meaningless in computing terms unless you can enumerate what "probably" means in that sentence.
The "probably" in that example was enumerated in the previous part of the sentence that you failed to quote:
whereas "probably true [or 90% chance of being true]" means that "it is probably the case that it is [100%] true
The 90% gives the meaning that reasoning systems that use probabilisitic logic exploit. Whether you think it's meaningless or not though, the fact remains that fuzzy logic deals with degrees of truth, and probabilistic logic deals with probabilities of truth that do not admit of degrees. When a person talks about partial truth, they are appealing to the intuitions that fuzzy logic is founded upon, and when they talk about likely or unlikely truths, they are appealing to the intuitions that probabilistic logic is founded upon. There is no reason that they can't be combined (e.g., something is probably mostly true, which might in one particular case mean I think it's 85% likely (probabilistic logic) that it has truth value between 0.7 and 0.95 (fuzzy logic)), but they are distinct, and "probably" refers to probabilistic logic more than fuzzy logic, which was my original point.