The difference being that the number of things you can do with a GUI as opposed to a CLI is much greater than the number of new things a touchscreen enables. T

The difference being that the number of things you can do with a GUI as opposed to a CLI is much greater than the number of new things a touchscreen enables. The author mentions that new programs like powerpoint were invented when the GUI was created, and thus concludes there will be a similar shift in the tablet space. That conclusion doesn't actually make any sense. A GUI allows you to see the graphics you're designing. A touchscreen does not provide you with any new set of information, merely a new way to manipulate that information.