I work with big data and have to solve a lot of problems in integration or by debugging again at the a live Systeme, which you simply cannot reproduce in local

I work with big data and have to solve a lot of problems in integration or by debugging again at the a live Systeme, which you simply cannot reproduce in local unit tests. And sometimes running a single test takes like 7 minutes so I have to reduce the times I run it to save time which is why I tend to fix code in an interactive REPL in the debugger.