I think the question of whether or not mental states cause the collapse of the wavefunction is open to interpretation[0]. All observers consistute an ontologica

I think the question of whether or not mental states cause the collapse of the wavefunction is open to interpretation[0]. All observers consistute an ontologically distinct mental reality[1], which by postulation is describable in terms of matter, and so a fortiori describable by quantum mechanics. Generally speaking, this means that the notion of "subjectivity" at the fundamental level of this supposed (quantum) ontology is statistically insignificant. The idea here is indeed that for formal consistency, all entities, mental or otherwise, must be described in quantum mechanical terms such that the description of mental states structurally composes Hilbert space as Hilbertian subspaces. Essentially, as per my diagram mentioned earlier, mental states occupy a position in the table such that if all mental states are accounted for in the description of Hilbert space, a pre-theoretical "rhythm" of statistically described decoherence is established. Nowhere do I presuppose that mental states are necessarily human, but only that the structure of consciousness is amenable to the structure of material reality. Biological reality itself is an implementation, or supervenes on, a fundamental material reality. There is no ontological commitment here to hominids as such in that hominids alone experience consciousness. [0]: https://en.wikipedia.org/wiki/Consciousness_causes_collapse#von_Neumann.2FWigner_interpretation:_consciousness_causes_the_collapse https://en.wikipedia.org/wiki/Consciousness_causes_collapse#... [1]: "The order and connection of ideas is the same as the order and connection of things." E2P7. Ethica. Baruch Spinoza.