The document discusses cost-benefit analysis (CBA) and how it can be used to evaluate investments and determine if perceived benefits outweigh expected costs. It provides definitions for CBA and key terms like present value, net present value, costs, and benefits. Examples are given for conducting a CBA, including gathering costs and benefits data over time, discounting future cash flows, and comparing results to determine the project payback period and benefit-cost ratio. Intangible or "soft" benefits are also discussed, highlighting different techniques for estimating their monetary value such as by leveraging expertise or surveying stakeholders.