Fallacies are not simply crazy ideas. They are usually both plausible and logical - but with something missing. Their plausibility gains them political support. Only after that political support is strong enough to cause fallacious ideas to become government policies and programs are the missing or ignored factors likely to lead to "unintended consequences," a phrase often heard in the wake of economic or social policy disasters. Another phrase often heard in the wake of these disasters is, "It seemed like a good idea at the time." That is why it pays to look deeper into things that look good on the surface at the moment.
- From Economic Facts and Fallacies by Thomas Sowell