Matt Shumer: Fable 5.2 is a "hall monitor" — my swearing-at-agents chart proves it

mattshumer_ · x · 2026-11-10

Matt Shumer (co-founder of Reflection AI) complains that Fable 5.2 has one fatal flaw: it's a hall monitor. He charted how often he swears at his agents each day — and one day shows a sharp drop: the day he got access to Fable 5.2.

The accompanying line chart of daily swearing frequency serves as evidence of how strictly the model's safety guardrails intercept everyday user language. He also shared a link on how to use it.

Related event: Matt Shumer Slams Fable 5.2 as a 'Hall Monitor'(2 posts)→

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