Why can it be useful to include extra details in a first draft even if they will be taken out late?

Including extra details in a first draft can enhance creativity and exploration, allowing the writer to fully develop ideas and themes before refining them. These details can provide depth and context, helping to establish tone and character. Additionally, they can spark new insights or directions for the narrative that may be valuable in later revisions. Ultimately, this approach fosters a more comprehensive understanding of the material before distilling it down to its essential components.