This might still be useful in the real world. Think movie industry, where having a mock OS for showing characters doing computer things is practically a trope i

This might still be useful in the real world. Think movie industry, where having a mock OS for showing characters doing computer things is practically a trope in its own right. I was recently in a discussion with some fans of the movie Hackers, in which one of them asked what OS they used in the movie. My reply was to the effect of, what every movie in the 90s used, which was basically Mac OS with fake UI elements cobbled together in Macromedia Director (or Flash in later films). With film studios increasingly turning to game engines for applications like providing real-time on-set CG as a reference for a shoot, something like this may well be the modern version of that.