Skrivener is a great tool to organize your thinking.<p>Its a really terrible tool at the point you engage with a professional editor or proofreader: its constructed text outputs are not easy to work with, and it tempts the author to make "just a few more changes" which ruin the proofing and review process.<p>Think in skriviner, but move to something else when you engage with publishing as a fixed-text outcome.<p>(based on what my S.O. said about working on a 600 page book)