messages_json: [{"role": "user", "content": "Could you help me understand what is test-driven development (TDD)?"}, {"role": "assistant", "content": "That's a great question. Regarding testing: What is test-driven development (TDD)\n\nThis is an important concept in programming. The key ideas are:\n\n1. The foundational theory involves understanding the core mechanisms at play.\n2. In practice, you'll encounter this in real-world applications where precision matters.\n3. Common misconceptions include oversimplification of the underlying complexity.\n4. Advanced practitioners go deeper by examining edge cases and interactions.\n\nI recommend building up from first principles, trying concrete examples, and referring to primary sources for the most rigorous treatment."}]