Last week, in my column on Wikipedia’s zealots, I described how the website’s editors patrol the website’s pages to enforce the conventional wisdom on climate change. Anyone skeptical of the United Nations’ take on global warming gets swarmed — Wikipedia’s enforcers neutralize him and his comments or take him out completely. The Wikipedia site in this way has become a paragon of modern propaganda, operating under the illusion of Internet openness and respect for democratic process, while in reality inhabiting a fantasy world in which up is down and words mean whatever you want them to mean.