[forbes]

I once briefly worked on a commercial system where the UI looked like it had been designed with a shotgun.

Dozens of UI elements. Nothing on the screen aligned. Nothing was in a logical place. Related items were not grouped together. Buttons had labels like 'Button1', 'Button1_'. The tab-order was completely random, so you had to use a mouse exclusively. It was a horror show.

The code underneath was just as crazy. The system was used day-to-day by several people who just understood its quirks. I made the fix I needed to make and got the hell out of there.