Dear Dr. Usability, I have just finished my 16th iteration of the user interface for cropping a picture. Everyone has their own vision of how it should work. I've tried it this way and that way, and when I've showed it to my colleagues, each person says something different. And I still have my own opinion on how I like it. If all of the variations don't eventually reduce to a real product, then all this design time is wasted. I can keep going in the dark until I hit the magic combination, but how long is that going…
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