Instead, they learned that one of the oldest technologies in human history—a sheet of paper and a pen—remains one of the most effective tools for managing complexity, whether diagnosing failures in large AI systems or navigating the far less predicta When Aya joined the incident response team of a rapidly growing AI company in 2026, she assumed the hardest part of the job would be understanding transformer architectures, GPU clusters, and model evaluation metrics. She was wrong. The hardest part was untangling human confusion. One Friday afternoon, an enterprise customer reported that the company’s AI assistant had produced contradictory legal summaries in two separate conversations. Engineers immediately suspected a regression introduced by a recent retrieval pipeline update. Product managers blamed prompt engineering. The customer success team feared reputational damage. Within an hour, dozens of hypotheses filled the team’s internal chat. Each seemed plausib...