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I agree wholeheartedly. I think the boolean blindness concept that's in the background of this article is incredibly important. But if you're going to propose an actual concrete solution, you need to assess whether it will be right all of the time, most of the time, or situationally (edit: and any of those answers is ok--it's fine to have a pattern that sometimes works if its presented as such). That requires looking at the ways it can go wrong. And this article just didn't do that.