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Discover why your first prompt almost never works — and build the write-run-refine loop that turns vague requests into prompts that reliably deliver.

Real data arrives broken: duplicates, blanks, mismatched formats, and impossible values. Learn what each mess does to your answer and the fix that clears it.

Step inside the training loop — the repeating guess-check-adjust cycle that turns a clueless model into a skillful one, one tiny correction at a time.

Beginners think programmers write code that works. They don't. They write code that fails, then loop through testing and fixing until it works — and that loop is the real skill.