“Even if removing 98 percent of a given impurity costs twice as much as eliminating 97 percent, and removing 99 percent costs ten times as much, the political appeal of categorical phrases like ‘clean water’ may be just as potent when the water is already 99 percent pure as when it was dangerously polluted.” - Thomas Sowell In the 1960s, a “free love” movement swept the nation, taking aim at Judeo-Christian sexual morality which it viewed as repressive and tyrannical. That sa