Silly me. [ he muses at his own folly. ] The class system does not transcendent realms, I see. Nor do my attempts at humor. It is something which has existed for centuries and is simply understood. Certainly a lord would never do the job of a merchant, but it certainly doesn't belittle one job or another.

[ though there was that one time a lord who accused him of selling him potentless medicine and threw him in jail, but that's a story for another time. Lies, of course. He would never swindle someone. It would ruin his reputation. And a medicine seller believed to falsify his customers got no business ]

Medicine isn't something learned overnight, indeed, miss, and it is as you say, something which continues to improve as time progresses. It is complex system of amounts of this and that to create something beneficial. The incorrect amounts or ingredients could become deadly. Certainly a powerful skill, nothing to simply belittle so easily.