Making financial decisions is a substantial part of our daily lives. We choose what to buy, where to buy, how much to pay, and how to pay. We make choices concerning taxes: to pay what we ought to or try to evade? If we possess enough money, we decide whether and what amount to save or invest. Alternatively, we may spend our financial surplus for shopping or gambling. In less favorable circumstances in which we lack resources, we potentially must decide on whether and how to borrow. Sometimes, we are asked to donate...