> "that's really a human issue ... ⌘-Z should have been adequate." I hope you don't work in usability. I've made exactly the mistake described, several times.

> "that's really a human issue ... ⌘-Z should have been adequate." I hope you don't work in usability. I've made exactly the mistake described, several times. When making small changes to a bunch of files, it's common to go through the whole open-edit-save-close sequence in a few seconds, and if you've got a few things open and someone's talking to you, it's easy to fuck up.