" It was Joseph Overton, an American lawyer, who first explained the mechanisms of uppercase Politics in the 1990s. He began with a simple question: Why is it that so many good ideas don’t get taken seriously? Overton realized that politicians, provided they want to be reelected, can’t permit themselves viewpoints that are seen as too extreme. In order to hold power, they have to keep their ideas within the margins of what’s acceptable. This window of acceptability is populated by schemes that are rubber-stamped by the experts, tallied up by statistics services, and have good odds of making it into the law books. "

― Rutger Bregman , Utopia for Realists: How We Can Build the Ideal World