(not so) obvious
Learning chess by investigating how the scenarios emerge from the variations is a daunting task. The logical way is of course the other way around. When you know the scenario, you should be able to propose a possible variation. In practice, you will always have to work with what a chess author provides you with. A chess author has a few reasons to withhold information from you. Usually with the best intentions: he doesn't want to overload you his publisher doesn't want the book to be too thick he wants to protect you from too complicated matter he wants to be complete so he floods you with irrelevant details to give it a scientific impression he makes choices for you he leaves out what is obvious for him Personally I suffered a lot from some books of GM Euwe about the opening and the endgame, which I experienced as quite boring. Even to the extent that I quit chess for 14 years. Only when I found the books of GM Joe Gallagher about the King's Gambit, I rediscovered my joy ...