This thesis intends an opening move in the field of legal theory as well as in that of law and technology studies, and especially in the intersection of the two. It tries to construct a theory of law and of its relation to technology that allows for the navi-gation of the contemporary passage from what I call modern technomics to a plat-form technomics linked to the emergence of planetary scale computation, algorith-mic governance and the climate crisis. To do that, I first try to make a contribution to a speculative legal thery (neither an internal theory of modern law as we know it, nor a critical/deconstructive legal theory). I do so by reading two key thinkers of modern law, Hans Kelsen and Carl Schmitt, as complementary, and through cur-rents of the so-called speculative turn in contemporary theory. Kelsen is read as an accelerationist/inhumanist, and Schmitt in light of cosmo/geontopolitics, while Deleuze and Guattari s assemblage theory serves as a background through which the rest is connected. Secondly, I mobilize this conceptual apparatus to speculate about platform technomics. I build technomic concepts of code, platform, device, application, interface and user. Algorithmic demogrammar is defined as operating by massive data collection, tracing of graphs and modulation of conducts. I look to trace some tendencies in the transition to platform technomics, e.g. to the contin-gency of the positions of person and thing, to the indistinction between norm and bias, to the non-instrumentality of technics, to the plurality of worlds, to the super-imposition of nomoi, to the confusion of cognition and governance etc. I finish by offering three speculative models/paradigms for the navigation of platform tech-nomics – an inhuman model, based on the hypothesis of general intelligence; an animistic paradigm, linked to the Gaia hypothesis/myth, and, finally, a tentative composition between the two.