Touch/tablet devices are going to be a big part of the future, if not the biggest, and these new UI's are designed for our interaction with those devices. That'

Touch/tablet devices are going to be a big part of the future, if not the biggest, and these new UI's are designed for our interaction with those devices. That's all cool. However, "working" on a tablet or touch device is simply not going to happen. Sure you can type an email or something similar but loads of people who do their day to day "work" on computers will not be able to be productive on such UI's. E.g. programmers, video editors, architects, designers, writers, editors, etc, will be annoyed by the obtrusive land grab of screen real-estate and clunky metaphors. When you do "precision work" you require a totally different approach, aka the traditional desktop.