Are there any categories besides right and wrong? I'd imagine that the success of some predictions is open to interpretation and/or ambiguous enough to defy eas

Are there any categories besides right and wrong? I'd imagine that the success of some predictions is open to interpretation and/or ambiguous enough to defy easy categorization. A perfect example would be "Podcasting will be a factor in the 2006 congressional elections in the US." How much counts as "a factor?" Any amount > 0? How can we be sure one way or the other about this one, without some extensive analysis? At the very least, I think some explanation of how the determination is made should be required.