Emotions play a powerful role in shaping our financial behavior, often making us our own worst enemies as we try to save, access value, and spend responsibly. In Dollars and Sense, bestselling author and behavioral economist Dan Ariely teams up with financial comedian and writer Jeff Kreisler to challenge many of our most basic assumptions about the precarious relationship between our brains and our money. In doing so, they undermine many of personal finance’s most sacred beliefs and explain how we can override some of our own instincts to make better financial choices.Exploring a wide range of everyday topics—from the lure of pain-free spending with credit cards to the  pitfalls of household budgeting to the seductive power of holiday sales—Ariely and Kreisler demonstrate how our misplaced confidence in our spending habits frequently leads us astray, costing us more than we realize, whether it’s the real value of the time we spend driving forty-five minutes to save $10 or our inability to properly assess what the things we buy are actually worth. Together Ariely and Kreisler reveal the emotional forces working against us and how we can counteract them. Mixing case studies and anecdotes with concrete advice and lessons, they cut through the unconscious fears and desires driving our worst financial instincts and teach us how to improve our money habits.The result not only reveals the rationale behind our most head-scratching financial choices but also offers clear guidance for navigating the treacherous financial landscape of the brain. Fascinating, engaging, funny, and essential, Dollars and Sense provides the practical tools we need to understand and improve our financial choices, save and spend smarter, and ultimately live better.

    Mandelbrot, one of the century's most influential mathematicians, is world-famous for making mathematical sense of a fact everybody knows but that geometers from Euclid on down had never assimilated: Clouds are not round, mountains are not cones, coastlines are not smooth. To these classic lines we can now add another example: Markets are not the safe bet your broker may claim. In his first book for a general audience, Mandelbrot, with co-author Richard L. Hudson, shows how the dominant way of thinking about the behavior of markets-a set of mathematical assumptions a century old and still learned by every MBA and financier in the world-simply does not work. As he did for the physical world in his classic The Fractal Geometry of Nature, Mandelbrot here uses fractal geometry to propose a new, more accurate way of describing market behavior. The complex gyrations of IBM's stock price and the dollar-euro exchange rate can now be reduced to straightforward formulae that yield a far better model of how risky they are. With his fractal tools, Mandelbrot has gotten to the bottom of how financial markets really work, and in doing so, he describes the volatile, dangerous (and strangely beautiful) properties that financial experts have never before accounted for. The result is no less than the foundation for a new science of finance.