> Japan had a "Fifth Generation" project, trying to do AI with Prolog. All that stuff hit the upper limit of what you can do with that technology, and it wasn't

> Japan had a "Fifth Generation" project, trying to do AI with Prolog. All that stuff hit the upper limit of what you can do with that technology, and it wasn't a very high upper limit. What was the limiting factor of the expert system approach? Something like the size of the search space or that the number of rules you’d have to write was just infeasibly large?