New in paperback. Hardcover was published in 2020. Plausible explanations are suggested for puzzles in various areas of economics and finance, such as the home bias puzzle, the PPP puzzle and the presidential puzzle. The author explains why some common beliefs are, in fact, myths, including those of the power of the market, inefficiency of the public sector and the use of low-interest policy to combat the depression caused by the Covid-19 outbreak.