From 'How to Test AI Code' to 'What Makes Us Human'

A deep dive from the quality engineering crisis in the AI era to the question of what makes humans irreplaceable — the 60x scissors gap, five-layer framework of knowledge.

domenica 31 maggio 2026 New tab

TL;DRAI

AI code generation outpaces human verification by 60x—8 seconds to generate, 15 minutes to test—creating a structural accountability gap no tooling fully bridges. AI-on-AI testing only validates internal consistency, not behavioral correctness; liability still scales with human attention, not generation speed.

2,689 words~12 min read

The Conversation That Started It All

It began with a practical question: How do you test code generated by AI?

Simple enough, right? We've been testing software for decades. Unit tests, integration tests, E2E tests, property-based testing, fuzzing — the toolkit is mature and battle-tested.

But the deeper I dug, the more I realized this question doesn't stay contained. It metastasizes. From testing strategy, it bleeds into software engineering epistemology, then into cognitive science, and finally — if you follow the thread far enough — into a question that has haunted philosophers for millennia.

What makes us human?