  This paper was written in 2015, and published in the Journal of Humanistic
Mathematics. This paper announces the first issue (2015) of Enchiridion:
Mathematics User's Guides, a project to produce peer-reviewed User's Guides as
companions to published papers. These User's Guides are meant to explain the
key insights and organizing principles in their companion papers, the metaphors
and imagery used by the authors, the story of the development of the companion
papers, and a colloquial summary appropriate for a non-mathematical audience.
Examples of User's Guides can be found at https://mathusersguides.com/
