> that one might identify as
Everyone seems to be missing this. It doesn't have to be in the DSM criteria, the parent poster is talking about the popular view.
I don't necessarily agree – I don't seek joy from work but I do things that others (my wife included) would consider as "work". The moment you tackle that label on them – or whenever I lose control of what I'm supposed to be doing – I'll no longer have the same joy.
> The person who for some reason is up on a Saturday night reading the NGINX source code in C
Sigh
Now this I have issue with. I think the best programmers I know will do something like this out of their own self interest. Maybe they are setting up some elaborate and over-engineered system for their own amusement.
If this is for work, though? You bet your ass I'll be reading that NGINX source code, if I have to, during work hours, however loosely defined those are. There are exceptions, of course. Sometimes your mind will be so focused on something that it _just won't let go_. In which case, fine, Monday can't wait and I'll try this thing. As long as there is no expectations from the part of the company.
Saturday night I'll be mucking around with 3d printing, game engines, programming my own blog software for the 30th time in a new Scheme dialect, anything. Just not work.