“Liberalism and science are systems—not just neat little theories—because they are self-skeptical rather than self-certain, by design. This is a reasoned—not a radical—skepticism. They put the empirical first, rather than the theoretical. They are self-correcting. Liberal systems like regulated capitalism, republican democracy, and science resolve conflicts by subjecting human economies, societies, and knowledge-production to evolutionary processes that—over time, and with persistent effort—produce reliable societies, governments, and provisionally true statements about the world. The proof is that almost everything has changed over the last five hundred years, especially in the West. As Theory points out, that progress has sometimes been problematic, but it has still been progress. Things are better than they were five hundred years ago, for most people most of the time, and this is undeniable.”