[work] I've spent literally all day working on understanding one aspect of one piece of code and I still don't understand it

like, fundamentally, at a base level, after talking to multiple people involved in its creationa nd reading the source 200 times

I understand it less now than I did this morning

oh that's not fair I also spent two hours figuring out how to fix a 401 error that was keeping me from adding some extra logging to something and the logs still weren't hit so I still have no idea what's going wrong somewhere else

today has just been a start to finish complete failure

I didn't even need to write any code I just needed to figure out whether or not system A uses system B

I still don't know

where is the authentication happening? I don't know

what's necessary to replace it? I wrote an extensive outline and all of it is wrong and now I still don't know