"Bryant believes that the social constructionist turn of the 90s was politically valuable in that it improved the social standing of many oppressed minorities. But he rejects what he perceives to be the extension of such constructionism beyond politics into ontology. Bryant writes:

“In arguing that everything is a social construction, the pluralist undermines the possibility of public deliberation about truth. Everything becomes an optional narrative or story about the world, an optional picture of reality, where we are free to choose among the various options that most suit our taste...”

I’m not sure if Bryant intends to include cosmopolitical thinkers like Latour and Stengers in his punching bag category “social constructionist.” I don’t understand how he could. If he does insist on labeling them as such (which seems to me to just obscure their true positions–but if he insists…), then, building on Whitehead’s categoreal scheme, I’d retort that “society” for these cosmopolitical thinkers has to be understood in the most general sense as an ontological category, not simply a human “construct.” The human organism is already a society of cells, each of which is itself a society of organelles, each of which is a society of molecules, each of which is a society of atoms, each of which is a society of protons, neutrons, and electrons, and so on… Realities are decomposed and recomposed by associations between and among actual occasions–occasions which are never simple unities but are always multiple and so always “in the making.” Which brings me to the concept of “construction”: if we are working within a process ontology, construction also needs to be ontologized. Biological evolution is a gradual process of construction wherein what begins as psychological desire later becomes physiological reality (to take the example of evolution by sexual selection). The physical world is itself continually constructed by what physicists are now calling “geometrogenesis.” This is not to say that the physical world is a human construct, mind you. The picture that is beginning to become clear as a result of contemporary physical cosmology is that space and time are the co-emergent products of the real activity of pure energy, something both non-human and pre-physical/pre-extended (Whitehead called it Creativity; physicists call it the quantum vacuum). If the physical world (as described by contemporary physics) is a network of relations always “in the making,” and not some collection of pre-given particles obeying eternal laws, then a “true” understanding of it must also always remain open-ended. There is no Science or Universal Reason that might once and for all pronounce upon the nature of the Real. There are many sciences, many methods, many rationalities. Science as it is actually practiced now and in the past has always already been a pluralistic enterprise. As Latour showed in Science in Action, what ends up being called “Nature” is always a consequence of some more or less temporary settlement of controversies. Every new generation of scientists stirs up new controversies about what the aging generation thought was settled.

The cosmopolitical perspective that I’d want to defend certainly does not “undermine the possibility of public deliberation about truth”–it is (once we accept an enactivist account of truth) the condition of its possibility! It is Bryant’s position that rules out such public deliberation by insisting on declaring war on all those human societies that reject materialism. Latour has plenty to say about the vacuity of the notion of “matter,” which I’ve discussed elsewhere and won’t get into here.  Accepting a cosmopolitical form of ontological pluralism doesn’t at all require that we think of all beliefs and belief-systems as created equal. Nor does it imply that social groups “freely choose” their beliefs simply as a matter of “taste.” The ontological commitments of any given society typically emerge out of long multi-generational processes of historical development. They aren’t just made-up on a whim by individual members. Further, the world view of a social group is as integral to their their livelihood and well-being as their food, shelter, and water, not simply an optional aesthetic veneer. As Trombley suggested, belief-systems enact ways of being and are not just representations.

Ontological pluralism is a commitment to multiple realities, many of which overlap, but some of which remain (at least for now) irreconcilable. It is not a commitment to tolerance of multiple perspectives on a single reality. This latter option, as Bryant points out, would be a rather trivial form of pluralism. It is also a rather colonialist and scientistic take on the Real. Anyone trying to argue that contemporary science has somehow provided us with a unified account of an objective reality that holds true for all people in all places and times has their work cut out for them. Several hundred years of “modern” science has only succeeded in making the world stranger, more dangerous, and more multifarious than it was for ancient and medieval peoples.

Am I saying that a ayahuasca shaman’s encounter with the spirit of the jaguar is just as real as the particle physicist’s encounter with the Higgs boson? Yes, most definitely. In fact, the shaman’s encounter is way more concrete and direct than the physicist’s, since the latter has to wait for a world-wide network of supercomputers to process the information for him, which only after many repeated trials, journal publications, and so on becomes what most (but not every!) physicist will agree is something like a Higgs boson. Even after all this painstakingly detailed mediation (“science in the making”), the Higgs boson remains now and forever a theoretical construct. The ayahuasqueros’ encounter with the jaguar spirit is anything but. Sure, a cognitive neuroscientist might claim to be able to explain the shaman’s experience as a “brain malfunction” brought on by the ingestion of a psychedelic plant brew. But this remains a reductive etic description and not a complete explanation. The neuroscientist should participate in an ayahuasca ceremony for himself before he goes declaring war on the shaman. At least, this is what a pluralist ethics would entail. Such shamanic practices have functioned quite well in their own tribal context for thousands of years. Instead of assuming from the get go that anyone who doesn’t describe the world in your favored language is deluded, try to get to know them, to understand not only what their world is like, but how their world is brought forth. Follow the injunctions through which they enact their world. Then, once you’ve explored it from the inside, by all means judge their enactment, contest it, translate its features into other terms to show why it is unethical, dangerous, or misguided.

I’ll leave you with an excerpt from an essay of mine on the ethical implications of enactivism and the need for a pluralistic planetary mythos (Logos of a Living Earth):

One consequence of the enactive approach is that the Cartesian quest for epistemological certainty becomes but the expression of a particular cognitive domain made possible by the abstract languages of mathematics, precise measurements of machine technologies, and controlled laboratory environment. If the nervous system is operationally closed, its function cannot be to modestly mirror an external, objective reality, even if the modest witnesses are highly trained scientists allied with powerful instruments that extend their sensory reach. The operational closure of the nervous system forestalls a representational account of its activity, as its role is maintaining coherence, rather than correspondence, between organism and environment. New techniques may open up previously hidden worlds, as when Galileo first turned a telescope to the sky and revealed the moons of Jupiter in 1610, or Hooke first recognized cells through a microscope in 1665, but one cannot speak of finally discovering the real as if it existed independently of our bodily and inter-bodily experience of its meaning.

As Haraway has suggested (p. 199, 1997), “…objectivity is less about realism than about intersubjectivity.” She yearns for us to come to see objectivity as a way of “forming ties across wide distances” (ibid.), instead of as the privileged and modest perspective of self-invisible European men who remain somehow unpolluted by their ambiguously situated bodies (p. 23-32, ibid.). If science can claim relative epistemological privilege, it is not the result of transcending culture, but of the ever-accelerating, ever-expanding mobility and combinability of the traces scientists and their cyborg surrogates have constructed within their networks. Outside of these special networks of labs, machines, shared languages, and centrally controlled policy initiatives, scientific facts have little relevance. As Latour put it, “we might compare scientific facts to frozen fish: the cold chain that keeps them fresh must not be interrupted, however briefly".

Segall