why are physics texbooks' problems so fcking hard? like the books teach the basic stuffs, same are the examples, and then the problems be delving into certain things than I can't even find those certain things in the books to work out the answers. It doesn't help that most of the times they don't even have the numerical answers so I could at least compare it with my answers. Even my lecturer had a hard time doing certain problems when we discussed in class. Am I that brainlet to do physics?