I think UML died because it was never that useful in the first place. If you want a high level design to get an idea across, a back of the napkin sketch is a lo

I think UML died because it was never that useful in the first place. If you want a high level design to get an idea across, a back of the napkin sketch is a lot quicker and less formal, and once you start getting into the formalities of UML it suddenly becomes more effort than it's worth, since you need tooling etc. It also implies a heavy OO approach, which isn't really going to fly with C hackers or functional programming enthusiasts.