It's generally hard to add breakpoints in production. OTOH most logging systems aren't set up for dynamic contextual reconfiguration, a place could have a compe

It's generally hard to add breakpoints in production. OTOH most logging systems aren't set up for dynamic contextual reconfiguration, a place could have a competitive advantage over debuggers with a bit of effort. IME I find it easier to deal with modifications to code than configuration in IDEs, precisely because I can identify diffs and if desired commit the modifications to source control on my own branch. I frequently debug things like third-party libraries (e.g. Ruby gems by adding my rvm gemset) to a git repo to track my modifications. It's generally harder to export and import breakpoints from an IDE. They are usually driven by line numbers, which aren't particularly stable over code changes.