I used to be a regular editor up until a few years ago. Dunno how many edits I have, but I did end up learning a lot, especially about really obscure topics. It really helped my formal writing and copy-editing skills, and I learned a little bit about coding, too.
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It is easy to go down into Hell;
Night and day, the gates of dark Death stand wide;
But to climb back again, to retrace one's steps to the upper air –
There's the rub, the task.
– Virgil, The Aeneid (Book VI)