Phase 3: Root Cause Analysis using 5 Whys

1. Why did hex codes appear as text?
→ Prompt included #1A8A9B
2. Why did the model render it as text?
→ Nano Banana interprets prompts literally
3. Why wasn't this caught earlier?
→ No pre-flight checklist for […]

[Original post on mastodon.social]

The incident: I was generating portfolio architecture diagrams when:
- Hex codes appeared as visible text (#1A8A9B in the image)
- Arrows pointed random directions
- Labels duplicated above AND below elements

Annoying? Yes. But also an opportunity.

I ran […]

[Original post on mastodon.social]

Phase 3 is where it gets interesting.

5 Whys analysis:
→ Why hex codes in image? Prompt included #1A8A9B
→ Why rendered as text? Model interprets literally
→ Why not caught? No pre-flight checklist

Root cause identified. Now what?