You may concede the point, but I am not sure that I do. I started a prebuild because I thought I remembered it being mentioned before in this thread. I'll go back and check for the post, I guess. I am not a particular fan of it, but I have never done OCC so I didn't really know what is necessary to prosper beyond Colossus and the science wonders. I do know 20k, and building Colossus, Great Library, Copernicus and Newton's will not endanger us culturally. We should have the ship off the ground before having those four wonders, though high culture they may be, will trigger a 20k victory. Since many of the points microbe made apply to Conquests, I am not sure that it should be followed to the letter. The tech situation in every game is different, and if we need to put max research into getting Education and Astronomy on our own, we can make that decision when we need to. Thinking about it more, I would like to suggest switching to granary and then prebuilding for the Great Library.