qnli question: In what economic field of study does Hayek's views differ from those in macroeconomics? sentence: Hayek's work on the macroeconomic subjects of central planning, trade cycle theory, the division of knowledge, and entrepreneurial adaptation especially, differ greatly from the opinions of macroeconomic "Marshallian" economists in the tradition of John Maynard Keynes and the microeconomic "Walrasian" economists in the tradition of Abba Lerner.