In 2026, the most AI-resistant way to check understanding is still a live human conversation

Multiple 2026 sources converge that a live oral defense is the hardest verification for AI to fake, because it demands spontaneous, real-time explanation. It's not unanimous — one program now has a panel of AIs grade the recorded conversation — but the human-judged live exam remains the strongest anchor.

What it means No tool can tell you whether someone actually understands their work. In 2026, the reliable signal is still the oldest one: ask them to explain it, live.