Murphy sketches the strengths and weaknesses of the various explanations of the business cycle, put forth by the classical economists, the Keynesians, the Real Business Cycle theorists, the Post-Keynesians, and the Austrians.
Related Links:
https://content.infineo.ai/articles/a-summary-of-different-schools-theory-of-the-business-cycle
https://mises.org/podcasts/human-action-podcast/what-does-says-law-really-say