“We are on a hurry, let’s fix in production, then you can write the fix in the repo.” (Multiple times)

Guess why we are always on a hurry…

Our deployment system doesn't allow for that :)

Hehe. I developed in prod... for some time. For a reason because I did not know the language, well and there was not used git, or not existed any dev sandbox anyway.

I refused to continue working on the project later. When I realized how horribly and inefficiently I waste my time.

Learning in my main language how to go with testing increased the speed and reliability of things by magnitude.

After that working without it... looked quite pitiful.

Those five 9s got to them a long ago