Why, I have gotten a lot of results. I know fifty thousand things that won't work. After much reflection and no shortage of sour grapes, it seems as though most of the criticism observed can be placed conveniently into two categories, based largely on the expectations of the critics therein. The first, in which the design proposal is considered an answer, is by far the more common of the two. In this category, critiques usually revolve around clarity, fit with original intent, and expression of concept.
Resolution is paramount, and the work portfolio-bound.
Far more rare is the second category, in which the criticisms revolve around the questions raised by the design exploration. Discussion in this category is far more likely to be concerned with the appropriateness of the questions asked, their substance, and what new paths of inquiry might arise from the exploration. In science, the test of any hypothesis is its ability to reproduce.