On Jan. 10, just one day after my article on UFO secrecy appeared in this newspaper and on this Web site (“Intelligent Extraterrestrial life: The Other Inconvenient truth?” Jan. 9), I was unceremoniously dropped as a Cato Institute adjunct scholar, a position I’d held for more than 20 years. First some background. I’m a Ph.D. economist with a national reputation in the antitrust area. I’ve written books, journal articles, and many dozens of op-ed articles over the years on a variety of public-policy issues. My association with the libertarian Cato Institute in Washington, D. C. goes back many decades. Yet...