Comment by cratermoon

In this case, I could have, but I felt my time was better spent thinking about why things were complex and hard to understand and made notes on that, mostly for my future self. Whenever I found the opportunity, I would include some of the reasoning and explanation, in written form, in my feedback. I didn't get much out of that gig, but I did end up with several thousand words of ideas and observations. I wouldn't be surprised if some future programmer on that project ran across something I left behind and found it useful, or at least comforting.

Edit to add: in 1:1s with the manager I was more direct. About the best I can say about that is "at least I tried".