Assuming I am reading a textbook/paper or any kind of rich material and then there is a point where I feel that the chapter I am reading is unnecessary or insignificant (I can get back to it later if I am wrong) or at times unmotivated or boring, what are good practices to skip such chapters?
(Assume Math/Engineering books)
How do you make sure that the content you skipped doesn't get in the way of the subsequent chapters? (i.e. Skipping does not carry any drawbacks)