Debug by symptom
Each failure symptom points to one mechanism, and the fix you already know.
1A failing output is on the bench. Tap the fix that addresses it.your turn
symptomConfident wrong fact
“The CEO of Acme is Dana Whitfield, appointed in 2021.” (No such person exists.)
tap the fix that addresses it
→ continue← backR replay
Next up
E.9 Safety attack labBuilds on7.11The edge of the map: what LLMs can't do5.4Context rot: when more context hurts7.9Structured outputs: guaranteed JSON5.1The model is frozen and stateless
Common questions
What is "Debug by symptom" about?
Each failure symptom points to one mechanism, and the fix you already know.
What problem does it solve?
Your AI feature is misbehaving. Which of everything you've learned actually fixes it?
What will I be able to do after this lesson?
You can map an LLM failure symptom to its mechanism and the right fix (retrieval, tools, trimming context, thinking budget, constrained decoding).