You'll probably find that the doctor's casual response is a sign of his relief that he can actually "do something" about it. That way, when a really complicated patient comes along, he can still look smart.
I imagine you'll be wanting to go to medical school after a few years of listening to bad doctors you encounter! Hopefully you can fill in the compassion that some doctors leave out of their care. And you've got a bunch of CDE education already under your belt!
