forseti (P0.239) + mimir (P0.615) ±impulse step-response resolves the lofn
ceiling confound. Findings: decay tau symmetric across signs (~0.9/turn);
raw impulse gain ~symmetric near neutral (forseti +0.034 vs -0.034); the
Frijda 'negatives loom larger' is emergent from the neutral anchor x non-zero
baseline interaction, not a primitive. Calibration fork answer: neither
asymmetric-decay nor negative-bias primitive is warranted — the levers are
overall gain + the neutral anchor.
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