I am always baffled how in all the articles (theoretical ones), there is no explicit calculations, or at least some reference how to find it, or where to find it (the calculation).
I get that, for example, in articles about quantum gravity, one would have 30 or 40+ pages paper if you'd include a whole calculation, but it's so frustrating for me, as an undergraduate student , to read an article and see that something is either "trivial", or just given the result without at least some steps given.
How am I supposed to learn something, if I cannot find reference on how it's done? And most of the textbooks are giving you just the bare minimum to understand it. Or the reference on how it's done is another article where everything seems like it fell from the sky.
I'd like to see how someone came to some solution explicitly. I often try to derive the result the author gave, and I get stuck at one point and I have no idea how he got the result, and that gets pretty frustrating. I am lucky I have physics SE so I can ask here, and someone who has a much greater knowledge is glad to help, but if P.SE (or other SE sites) didn't exist, I don't know were I'd find all the explanations :\
How does one learn from all this? : (