I like to keep a debugging lab notebook when I’m working through a particularly tricky problem. It’s nothing fancy, just a new tab visit to docs.new and a quick @today to add today’s date. I usually try to describe the problem and the specific issue I’m having, including any reproduction steps or screenshots (frequently copied over from the issue tracker). I try to summarize the issue and my understanding of how things work, though this frequently leads to a handful of open questions ...