I do not buy into the duodecahedron idea or any other complicated models for the universe. I am a firm advocate of the Occam's Razor approach: simpler ideas are likely to be closer to the truth than elaborate ones. I therefore take a dim view of 3-tori, "doughnut", and dodecahedron models. I urge you to consider the four-dimensional hypersphere model that I described at the beginning of my "The Shape of the Universe" thread.