You know how when you read a work of classic literature, it’s often preceded by an “introduction”? Why isn’t it called “spoilers”? And why doesn’t it come at the end of the book, since it invariably contains plot points and character developments you don’t want to know before reading the book? I’m irked by this every time I read a book with an introduction.
This is why I now skip introductions, forwards, and author’s notes.