Understand "sunk costs" in making decisions
Emotions add zest to life. They propel us to our feet when our favorite running back scores a touchdown. They warm us at an inspirational concert or movie. But in the realm of business and investing, emotions sometimes hinder good choices. In fact, businesses and individuals often let emotions dominate the decision-making process.
This is especially true when choices are based on "sunk costs." Broadly defined, sunk costs are past expenses that are irrelevant to current decisions. For example, many firms hire consultants who sell and install software. In some cases, a company is still waiting - three or four years into the contract term - for a functional and error-free system.
