Opportunity Cost Core rule: every commitment displaces its best alternative. Report both that forgone value and the net value delta; decide on the delta, not the chosen path alone. When to Use - Allocating scarce time, headcount, budget, or attention across competing options - Feature prioritization, build-vs-buy, tech-debt vs product work - Saying yes to a large commitment that displaces other work - Comparing a bold path against polishing the status quo when windows may close When NOT to Use - Trivial or cheaply reversible choices where analysis costs more than the resource - No real altern…