Comment by BatteryMountain

Go through a file of 15000 lines of complex C# business logic + db code, and search for specific thing X and refactor it, while going up & down the code to make sure it is correct. Typically these kinds of tasks can take anywhere from 1 day to a week for a good human developer, depending on the mess and who wrote it (years ago under different conditions). With my workflow I can get a good analysis of what the code is doing, where to refactor (and which parts to leave alone), where some risks are, find other issues that I didn't even know about before - all within 10 minutes. Then to do my iteration above to fix it (planning & coding) takes about another 30 minutes. So 30 minutes vs 1 week of hair pulling and cursing (previous developers choices..)... And it is not vibe coding, I check every single change in git diff tool long before committing, I understand everything being done and why before I use it.