evidence: Socialists, says National Review correspondent Kevin Williamson, are guilty of a fatal conceit: They think they can develop a system so powerful that it can consider every variable in society and propose scientific answers "about how many acres of potatoes to plant, and when and where to plant them." [...] The subtitle of Hayek’s last work "The Fatal Conceit" is "The Errors of Socialism." Sen. Bernie Sanders, I-Vt., and Rep. Alexandria Ocasio-Cortez, D-N.Y., have failed to learn from those errors, says Williamson, asserting that "you cannot call yourself the party of science and the party of socialism too. You have to choose one or the other." Socialists flaunt their compassion, argues former National Review Editor-in-Chief John O’Sullivan, because it gives them an excuse to impose their will on others "unlawfully and even murderously."