I have idea files of books that I want to write one of these days, stories I want to write one of these days, but I'll probably never get to them.
George R. R. Martin[as for evolution]....cutting out the sections [on the subject] is preferrable if the portions are not thick enough to cause damage to the spine of the book as it is opened and closed in normal use. When the sections needing correction are too thick, paste the pages together being careful not to smear portions of the book not intended for correction.
George R. R. Martin