Interpretability debate: is the "monofunctional neuron" framing sufficient for weight-encoded knowledge?
thebasepoint · x · 2026-10-19
A technical interpretability discussion questioning the coverage of the "monofunctional neuron" description. The author focuses on sensitivity (how much of the named concept the neuron actually contributes to) and effects (whether you can say what it does and whether it does what you claim).
He raises a deeper point: information about the world is fundamentally encoded in weights, not activations — so for which behaviors (model says X when asked Y) is the monofunctional-neuron framing actually sufficient? A sharp critique of activation-based interpretability methods.
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