. It provides an introduction to consumer choice, the theory of the firm, and general equilibrium models, with an overview of the main results and tools used in studying these topics, both directly in economics and indirectly in various other fields. This includes analysis of consumer and producer decisions, partial and general equilibrium analysis, insurance, the welfare theorems and failures of these theorems as with externalities but with resolutions, contract theory and mechanism design, policy analysis, the content of theory for data, and the design of media of exchange as with Bitcoin and markets made possible by distributed ledgers. (from ocw.mit.edu)