Bella asks the most interesting questions. Not so much because the answers are unknown, this time, but because the questions imply such interesting other possibilities you could imagine, if you didn't already know how things worked. "There's all sorts of skill books reputed to contain particular exercises that will get you faster to the next level of some particular Skill. I'm not sure I could say there was a general principle besides that? I mean, going on some of the things you've said before, if a Video Game tells you exactly how close you are to getting the next Skill level, and you can use that to determine exactly how many points you gain from doing a particular exercise, we don't have anything like that. People try to figure out on a case-by-case basis what's most effective, and of course people argue about that."
Bella's final question is less ambiguous in Lictic than it would have sounded in English; in Lictic it clearly means 'Is there synergy if you do ((the exercises) and (doing dungeons)) at the same time so (that is why) combat skills level up faster?' Haroun's reply is that dungeons beyond minor dungeons have opportunities to use all sorts of Skills, from Alchemy to Diplomacy to Weaving.