Economics is the social science that analyzes the production, distribution, and consumption of goods and services. The term economics comes from the Ancient Greek οἰκονομία (oikonomia, "management of a household, administration") from οἶκος (oikos, "house") + νόμος (nomos, "custom" or "law"), hence "rules of the house(hold)".Political economy was the earlier name for the subject, but economists in the latter 19th century suggested 'economics' as a shorter term for 'economic science' that also avoided a narrow political-interest connotation and as similar in form to 'mathematics', 'ethics', and so forth.

A focus of the subject is how economic agents behave or interact and how economies work. Consistent with this, a primary textbook distinction is between microeconomics and macroeconomics. Microeconomics examines the behavior of basic elements in the economy, including individual agents (such as households and firms or as buyers and sellers) and markets, and their interactions. Macroeconomics analyzes the entire economy and issues affecting it, including unemployment, inflation, economic growth, and monetary and fiscal policy.

Paul Robin Krugman ( /ˈkruːɡmən/; born February 28, 1953) is an American economist, Professor of Economics and International Affairs at the Woodrow Wilson School of Public and International Affairs at Princeton University, Centenary Professor at the London School of Economics, and an op-ed columnist for The New York Times. In 2008, Krugman won the Sveriges Riksbank Prize in Economic Sciences (informally the Nobel Prize in Economics) for his contributions to New Trade Theory and New Economic Geography. According to the Nobel Prize Committee, the prize was given for Krugman's work explaining the patterns of international trade and the geographic concentration of wealth, by examining the impact of economies of scale and of consumer preferences for diverse goods and services.

Krugman is known in academia for his work on international economics (including trade theory, economic geography, and international finance),liquidity traps and currency crises. He is the 17th most widely cited economist in the world today and is ranked among the most influential academic thinkers in the US.

Dan Ariely (born April 29, 1968) is an Israeli American professor of psychology and behavioral economics. He teaches at Duke University and is the founder of The Center for Advanced Hindsight.Ariely's talks on TED have been watched 2.8 million times. He is the author of Predictably Irrational and The Upside of Irrationality, both of which became New York Times best sellers.

Dan Ariely was born in New York while his father was studying for an MBA degree at Columbia University. The family returned to Israel when he was three. He grew up in Ramat Hasharon. In his senior year of high school, he was active in Hanoar Haoved Vehalomed, an Israeli youth movement. While preparing a ktovet esh (fire inscription) for a traditional nighttime ceremony, the flammable materials he was mixing exploded, causing third-degree burns over 70 percent of his body.

Ariely was a physics and mathematics major at Tel Aviv University, but transferred to philosophy and psychology when he found the writing too physically taxing. However, in his last year he dropped philosophy and concentrated solely on psychology, in which he received his B.A. He also holds an M.A. and Ph.D. in cognitive psychology from the University of North Carolina at Chapel Hill. He did a second doctorate in business administration at Duke University at the urging of Nobel economic sciences laureate Daniel Kahneman.