I respectfully disagree. Just because you have not seen it firsthand does not mean that it cannot be done, nor does it mean that it cannot be done efficiently and effectively. The problem with AI's is not when they are desgined and implemented in the development cycle. The problem is with the fact that there simply isn't enough quality or talented AI programmers to go around. Can you provide that source? I would be interested in reading about this. Thanks. Civ4's AI wasn't very good, by the way. It was decent enough in BtS to get by, but just barely.