The Worst Typo I Ever Made

When working on anything having to do with a computer, it is best to 1. backup your work first, 2. make edits on a copy, and 3. get cozy with your "undo" button, and allow time to consider using it. There are times when all these steps are skipped, and the worst thing possible happens. Tom Scott explains his most egregious "onosecond." The story is a couple of minutes shorter than the video.