Manzotti, Riccardo (2016) No evidence that pain is painful neural process. Animal Sentience 3(11)
Brian Key, Why fish do not feel pain
Key (2016) claims that fish do not feel pain because they lack the neural structures that have a contingent causal role in generating and feeling pain in mammals. I counterargue that no conclusive evidence supports the sufficiency of any mammalian neural structure to produce pain. We cannot move from contingent necessity in mammals to necessity in every organism.