Showing evolution is a valid reason to refrain from deleting a post that is no longer up-to-date.

I often think of a post as a snapshot of what was happening when I wrote it, and I like to look back at old posts -- both mine and the posts of other writers - to remember that particular time and place.

You're a Medium voice I always enjoy. Thanks for asking me to be part of your new pub. I know that it will thrive and am happy to be part of it.