If you are forced to describe things for someone else, it sharpens your senses. And also your sense of how hard it is to make the translation from the vibrant, multi-faceted world to a sentence that distils it.
Judith ThurmanAs for the multiple editions, in the case of a truly great writer - Shakespeare, Emily Dickinson, Proust, someone with a canon - there is often a "variorum" edition of the work that presents its variants. I think publishing most other writing that way would be impossible, economically, for publishers, and very ill-advised for authors.
Judith Thurman