Everth and Gurney retain the political ambition of new materialism while challenging the unrestricted transfer of quantum indeterminacy into social theory. Their argument turns on scale: quantum decoherence and quantum Darwinism explain how relatively stable classical entities emerge through environmental entanglement, selective amplification and redundant informational traces. Relation remains constitutive, but relationality does not require the disappearance of persistent objects, histories or causal asymmetries at macroscopic levels. The paper’s conceptual operation is therefore corrective diffraction. Barad’s agential realism is read through contemporary physics rather than merely extended by metaphor, producing an ontology in which emergence generates novel properties and permits downward causation. This restores methodological friction between disciplines: transdisciplinarity becomes accountable translation, not the poetic annexation of one scientific register by another. The broader bridge is toward ecological and political inquiry, where material interdependence must coexist with scalar precision, durable entities and empirically defensible claims about climate, technology and more-than-human worlds.