superposition-as-single-root-cause

Antecedents (all must be IN):

• OUT read-write-asymmetry-superposition-consequence — The read-broad/write-narrow asymmetry is the direct operational consequence of over-complete superposition: reading is a simultaneous linear projection over all active features, but writing must be rank-one to avoid cross-talk in the over-complete basis, making the write channel inherently and necessarily narrower.
• OUT superposition-covariance-editability-triangle — Superposition, covariance whitening, and rank-one editability form a closed logical triangle in which each property necessitates the others: over-complete superposition requires covariance separation for feature addressability, covariance separation defines the geometric space in which rank-one updates are well-defined, and the boundedness of rank-one editing confirms the addressable space is finite.

Unless (any of these IN defeats this justification):

• IN superposition-as-single-root-cause-v2 — Superposition is a central unifying node in a tightly interlocked logical structure linking over-complete representation, covariance whitening, and rank-one editability. The read-broad/write-narrow asymmetry is a direct operational consequence of the over-complete basis (simultaneous linear projection for reading, rank-one injection for writing), covariance separation supports the geometric well-definedness in which rank-one updates operate, and the boundedness of rank-one editing is consistent with a finite addressable space. These three properties form a closed triangle of mutual dependence, so that none must be treated as independent of the others, and the structure is accounted for without invoking additional free parameters among them.