Nudge (book) nudge?" Nudge (book) Nudge: Improving Decisions about Health, Wealth, and Happiness is a book written by University of Chicago economist Richard H. Thaler and Harvard Law School Professor Cass R. Sunstein, first published in 2008. The book draws on research in psychology and behavioral economics to defend libertarian paternalism and active engineering of choice architecture. The book received largely positive reviews. "The Guardian" described it as "never intimidating, always amusing and elucidating: a jolly economic romp but with serious lessons within." It was named one of the best books of 2008 by "The Economist". One of the main justifications for
Thaler thousands of dollars, and are highly sought after by serious collectors of thalers. Few circulated in any real sense so they often remain in well-preserved condition. In the Holy Roman Empire, the thaler was used as the standard against which the various states' currencies could be valued. One standard also adopted by Prussia was the Reichsthaler, which contained of a Cologne mark of silver. In 1754, the Conventionsthaler was introduced, containing of a Cologne mark of silver. In 1837, the Prussian thaler became part of a currency union which set the value of the southern German gulden at per thaler.