Ever since I first saw Mathematica, I've been amazed that the notebook model hasn't caught on more generally. It would make this paradigm perfectly natural - de

Ever since I first saw Mathematica, I've been amazed that the notebook model hasn't caught on more generally. It would make this paradigm perfectly natural - delayed information would clearly be loading in its own frame, and you would expect the visual scroll and input focus to both be centred on the current frame, so it wouldn't be odd to have to go backwards to look for an update.