I think you're right. The Type 1 flags come from a combination of theory and hands-on experience, and become reflexes quite early on. Mine work fairly well. The type 2 part, assessing whether or not it deserves your attention, seems to be to be about 10 million times harder for me, and is mostly what I'm trying to work on. I ask my preceptor "is this normal or should I be freaked out?" a lot. Of course, she rarely tells me straight up, and usually tries to make me reason through it on my own with a series of guiding questions.