I used it to come up with twenty examples of regression to the mean error in the real world. Unfortunately, I'm not sure how long that's supposed to take, so all I can say for sure is that my examples were nice and diverse, and that the method is neither terrible nor magic. It took me around three hours to come up with the twenty, although had I been someone less subject to akrasia it might have been considerably faster. Also on the benefits side, I never felt really "stuck", which was nice.