This is true for tools, but it's not true for museum exhibits, brand experiences, trade show stuff, AV presentations, ... These must work, never break, or you're out of business . Not much room for error and bugs there. That being said, "We will do our best to help you" sounds much better than "we don't want to be held accountable if it doesn't work", thanks. I also agree with Peter that nowadays every UI is moving all the time, but I think there's a middleground here between "changing entirely" and "animating what's already there" that I hope animation support for UIToolkit will find at some point. Note that I hope it will not just be CSS animations as that is far more limited (and far too limited) for any complex usecase. If we wanted to create simple HTML+CSS based UIs we'd be in web development, not interactive experiences.