I traded guitars with someone recently, and the guy I got it from had it set up with really low action. We were playing, and he commented that seeing the way I play I should think about raising the action. Only later did I start wondering what he meant by that. Now, I'm not very good, I will freely admit that. So I'm sure that had something to do with it. But I don't totally stink, either, I'm OK. So my question is: when is a higher action better for someone? And what could he have possibly seen in my 5 minutes of noodling that could have caused him to make that remark?