JKT  Not everyone has basic to-do lists and the point of OmniFocus is not to be a basic to-do list, it is ultimately to be a GTD app (with enough flexibility to be usable by people who don't know anything about GTD). While that might sound like a trivial difference, it isn't, as the plethora of GTD apps that have sprung up recently testify to (with, incidentally, none suiting absolutely everyone's way of GTD, hence the number of different apps that have arisen - many different attempts at solving the GTD problem).  
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