Fizz Buzz teaches important lessons: 1. Condition ordering matters. Most specific first, most general last.
2. Think about overlapping cases. Numbers divisible by 15 match multiple conditions.
3. Test edge cases. Try 3, 5, 15, and a number divisible by neither.
4. % checks divisibility. n % k == 0 means n is divisible by k. This problem appears in coding interviews to test basic logic. If you can solve it correctly and explain your reasoning, you demonstrate programming competence.