Page 111: "But the perfecting of machinery is the making human labor superfluous." replaced with "But the perfecting of machinery is making human labor superfluous."
Page 130: preletariat replaced with proletariat
Page 111: "But the perfecting of machinery is the making human labor superfluous." replaced with "But the perfecting of machinery is making human labor superfluous."
Page 130: preletariat replaced with proletariat