publish: true gemini: true tags:

• software_engineering
• systems_thinking created: ‘2026-05-04 14:40’ last_modified: ‘2026-05-04 14:40:00’ status: evergreen confidence: stable

Test-driven development forces API design upfront

Writing the tests before writing the implementation forces the developer to consider how the code will be consumed rather than how it will be built. It ensures that Second-order effects matter more than immediate outcomes.¹

Footnotes

1. Beck, K. (2003). Test-Driven Development. ↩