Why Closed Software Is Better Than Open

The article argues that restricting scope by default in software development improves code quality and reduces complexity. It applies the 'principle of least privilege' to code, recommending using private and final modifiers in Java, const in JavaScript, and isolated scopes in Angular directives by default, only broadening access when necessary. This principle extends to project features, discussions, and test-driven development to prevent unintended side effects and reduce change costs.