"Tests Are a Waste of Time"
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A rebuttal to the common belief that TDD and writing tests first is a waste of time. The argument is structured in three parts: (1) professional software development is fundamentally about making guesses and verifying them through feedback loops, making tests essential; (2) writing tests first requires a testable architecture (hexagonal/clean/ports-and-adapters), which is hard to retrofit later; and (3) testing is genuinely difficult to learn but mastering it unlocks better design skills, scalable code, and career value. The post acknowledges that TDD isn't always strategic — early-stage products with no customers should focus on validating theoretical value before investing in test infrastructure.
