This, 100%. Reproducibility, traceability and auditability all go out the window when you allow source modification on in production directly. You never want to

This, 100%. Reproducibility, traceability and auditability all go out the window when you allow source modification on in production directly. You never want to ask "what's running in production" only to be greeted by crickets in response, or worse a lone "my branch from five days ago."