[imdsm]

Or when you have a robust CI process in place

[lostcolony]

I've yet to see the place that had the level of testing, and infallability of the CI process, to where I wanted to deploy on a Friday. Yeah, it may be a low chance that anything will go wrong, and an equally low chance we'll be unable to easily rollback, but so few things can't wait until Monday that I want to roll those dice.

[enw]

For any somewhat complex architecture, even with great tests and canaries there will be unexpected issues.

[linkdd]

I have 100% code coverage in my unit tests + behavioral tests (with cucumber).

And yet, problems still happen.

Programming is the art of adding bugs to an empty text file.

[wdfx]

Even an empty file can contain a bug, by virtue of being empty.