 But these statements need qualification. For one thing, once the details of an acceptable reductive intentionalism about consciousness emerge, it could turn out that—as a matter of natural fact—something very like the biological organization found in ourselves and other animals is needed for its realization, so it could turn out that consciousness is not as independent of neurophysiology as functionalist theories often suggest (consider Prinz’s 2012 “neurofunctionalism”). On the other hand, one could reject reductionism of any sort about consciousness, while still arguing on independent grounds (like Chalmers 1996) that, as a matter of natural (though not metaphysical) necessity, the realization of consciousness is very loosely physically constrained. And then there are panpsychist views to consider (Strawson 2006, Goff 2017). If there is no genuinely non-mental, or at least non-phenomenal, reality to be found even in particle physics, then the whole “diversity of realization” question will have to reconfigured. Perhaps the question then will be something like: which mental or experiential properties can emerge from which others, and how?