Examining the benefits and costs of a little more or a little less of a good is:

1. Real decisions are rarely all-or-nothing. 2. Most choices involve marginal analysis. 3. That means examining the benefits and costs of choosing a little more or a little less of a good. 4. Thinking in totals would treat every choice as a decision to have all or none. _Source: OpenStax Principles of Microeconomics for AP(R) Courses 2e (CC BY 4.0), Ch 2 'Choice in a World of Scarcity', sections 2.1-2.3_