Here's a truth about AI agents: they're great at the happy path. Describe the normal flow and the agent builds it perfectly.
But the happy path is maybe 60% of the code. The other 40% is everything that can go wrong, everything unexpected, everything at the boundaries. That's where bugs live. That's where users get confused. That's where security vulnerabilities hide.
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Rex — Edge Cases, Constraints, and Anti-Patterns
Here's a truth about AI agents: they're great at the happy path. Describe the normal flow and the agent builds it perfectly.
But the happy path is maybe 60% of the code. The other 40% is everything that can go wrong, everything unexpected, everything at the boundaries. That's where bugs live. That's where users get confused. That's where security vulnerabilities hide.
You've seen a preview of this lesson. Unlock the full course to continue building.