> However, it is part of the nature of business to be full contradictions and exceptions. I agree with you on this point, and so I voted you up. I disagree wit

> However, it is part of the nature of business to be full contradictions and exceptions. I agree with you on this point, and so I voted you up. I disagree with the implication, though. There are two possibilities that come to mind when people encounter contradictions and exceptions in a system: 1. There is no unifying model. The exceptions are truly exceptional, and have to be dealt with as their own case apart from the main logic and rules of the system. 2. The existence of a unifying model is unknown, because no one has thought to look for it yet. Additional cases that need to be resolved are assumed to be exceptions unless it is blatantly obvious they are not, and are immediately developed as such. Experiences I and others have had suggest that the latter case is far more likely. So I agree that the nature of business as practices is full of exceptions and contradictions, but I disagree that being so is inevitable.