Yes, exactly. That's why I asked the question: to drive out the point that the ontology the GP was using was probably not terribly useful. Although I did use t

Yes, exactly. That's why I asked the question: to drive out the point that the ontology the GP was using was probably not terribly useful. Although I did use the weasel word "practical" to narrow the field. If you don't limit yourself to general purpose languages, then I'm sure you can find one that is "entirely" safe.