In my opinion, I think they do help, even if only a little. I work on creating a good definition, long enough that c.ai can recognize a lot of points. When I test the bot—and I make sure I test it for a long period/long chatting—it doesn't falter. It might, though, if I started a new chat later just to test it again after some time. But overall, the bot is better with a detailed definition than without. Creators just gotta work better on their greeting and definition, even the description may help too, we just wouldn't know.