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This... This is the most bizzare thing I've ever heard of when it comes to learning to draw. Don't practice, don't draw the subject you want, just draw everything else? Otherwise your work becomes technical and boring? Am I missing something here? Okay, you get good at drawing what's there as apposed to working overly hard on the subject manner but if you don't work on your weaknesses how ever will you develop? This entire thing has boggled my mind!