Apple's AI instructions literally said 'Do not hallucinate' — BBC false alerts persisted anyway

GaryMarcus · x · 2026-10-24

Gary Marcus amplified a critique of Apple's hallucination problem: Apple Intelligence's system instructions, found in a 2024 macOS beta, literally said "Do not hallucinate."

It didn't work — Apple's iPhone news alerts kept placing false headlines under the BBC's name, and Apple switched the feature off in January 2025. On a panel, Marcus argued the model "doesn't actually understand what a hallucination is," so instructing it to stop making things up is futile.

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