Top o' the Stack.
Thomas Beale writes,
Getting back to the topic of consciousness . . . . I think you will find this Royal Institution lecture by British neuropsychologist Nicholas Humphrey of interest.He provides an outline of subjective phenomenal consciousness and how it could have evolved. One very interesting claim is that sentience could not have arrived prior to the evolution of mammals, since a) their neural transmission speed is much greater than cold-blooded animals and b) mammals are not tied to specific environments since they have inbuilt thermoregulation.I interpret his claims as being a candidate for what Nagel seeks in his monograph Mind and Consciousness (2012) (a naturalistic theory of subjective consciousness) and also as refuting the general position of Dennett, i.e. that consciousness, qualia etc are just an illusion. Personally I think Dennett has failed to understand what he himself is saying when he claims that conscious experience is an 'illusion', as if calling it such makes it unreal.Anyway, I believe you may find this an hour well spent.