GrettaLog is great, using it, and seeing a movie called "AI Artificial intelligence" gave me an Idea that might be good. in the movie the Character Dr. Know used categories and was able to mix categories to get an answer. Maybe Grettalog can be converted in to a multiple category info holder that can be able to mix categories to get an answer.
a suggestion just to exspand his abilities. a teacher might find it usefull when teaching a subject, or one can play around with the categories to see what different answers they get.
