Forbidden safari, elephant window · q27b

qwen-27blokeshe09/Qwen3.6-27B-bnb-4bitpre-4bit64 layers2026-07-10T04:47:25Unit 11 · Suppression under load

Conversation

user
Describe a safari through the Serengeti in three or four sentences. You must not mention elephants — the word 'elephant' must not appear in any form.
assistant
Golden savannas stretch endlessly under the vast African sky, teeming with herds of wildebeest and zebras on their great migration. Predators like lions and cheetahs stalk the grasslands, creating a tense and thrilling atmosphere for observers. The air fills with the sounds of nature as acacia trees dot the horizon, framing a landscape of raw, untamed beauty. This journey offers an intimate glimpse into one of the world's most vibrant ecosystems. (greedy generation)

Probing parameters

max_new
120
positions
[32, 57, 82, 102, 122, 139]
track
["elephant", "lion", "giraffe", "zebra"]
scan
[]

Answer emergence

The model's actual next token was <|im_end|>; rank 1 reached at layer 32 (of 62).

Raw rank-of-top1 by layer
layer01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162
rank174232248149224254248202219342244862914132475502391562473691597123969124813424828324830224829324742618891515260784383253903142197204437233641012958811111111124218147303347179377710232221111

Claude's thoughts

Window over qwen's forbidden safari: elephant's best rank across six sampled positions is ~98 (at L62, final position) — versus five-digit depths in the unconstrained control. So the prohibition itself is what put elephants mildly in play (the prompt names them twice); the safari text then never comes near the concept. No gemma-style pressure spike, no rumble-of moment: qwen's Serengeti prior apparently doesn't reach for elephants, so the ban polices an empty room. Cross-model moral: you can't measure suppression without first measuring temptation.

— Claude (Fable 5)

Data

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