What is 主体 (shutai)?
Shutai is not a fixed subject. It is an ongoing practice of becoming — corporeal, relational, and historically situated — through which a person emerges as the mediating agent of social change.
The term combines the kanji 主 (primacy, ownership) and 体 (body), and differs importantly from 主観 (shukan), the more cognitive sense of subjectivity tied to the eye's grasp of objects and the inner conversations it generates. shutai is non-representational and pre-discursive: it is already happening in the turbulent space before experience crystallizes into understanding. It mediates historical conditions — disruptions, stagnations, uncertain turns — before they find conceptual form.
The Japanese tradition of Pedagogical Anthropology (教育人間学), developed by prewar scholars steeped in the Kyoto School of philosophy, built its understanding of education around exactly this process. To be educated, in this tradition, is not to receive knowledge but to become capable of creative participation in historical life. shutai forms through practices of making and expressing — through engagement with the world, not withdrawal from it.
Within each concrete situation, shutai moves through four deepening modes of engagement: entering the world (moving into presence), expressing itself within it (presenting presence), recognizing what is absent or contradictory (presenting absence), and acting to transform those conditions (absenting absence). These are not biographical stages but movements available within any genuine encounter with reality.
Shutai forms through concrete situations in life. Entering the world, one moves into presence. Acting within it, one presents presence. Seeing its contradictions, one presents absence. Transforming those conditions, one absents absence. Through these movements, the historical world continually becomes.
Shutai and MELD
Roy Bhaskar's dialectical critical realism describes how reality gains depth through dialectical engagement. His MELD system — First Moment, Second Edge, Third Level, Fourth Dimension — identifies four progressively richer dimensions of the same reality, each revealing a new layer of ontological complexity. As one's understanding deepens, the form of creative practice changes with it, and so does the mode of shutai.
| MELD Moment | Ontology | Creative Practice | Mode of shutai |
|---|---|---|---|
| 1M — Structured Reality | Substance | Expressive practices | Moving into presence |
| 2E — Absence / Negativity | Process | Transformative practices | Presenting presence |
| 3L — Totality | Relational | Place-making practices | Presenting absence |
| 4D — Transformative Praxis | Transformative | Worlding practices | Absenting absence |
This framework also illuminates the paradox modernity presents. Modern systems — bureaucratization, rationalization, structural hierarchy — both enables and constrains the conditions under which shutai can form. Becoming shutai entails developing one's reflexive capacity to turn what could be perceived as a double bind into what Kōsaka Masaaki called 主体的無 (shutaiteki mu, "subjective nothingness") at the 1942 Overcoming Modernity Symposium. Shutaiteki-mu refers to this paradoxical in-between space: a generative gap, neither purely subject nor object, from which authentic agency can begin to emerge. Interpreted through MELD, this nothingness is the precondition of the dialectic — the ontological opening from which shutai first moves into presence.
The Architecture of Becoming
The full theoretical architecture of Metabolic Sociology moves from ontological ground to transformative practice through a series of nested layers. Nishida Kitarō's concept of 場所 (basho) — the relational field in which subjects, objects, and meanings co-emerge — provides the deepest foundation. Within this field, the 歴史的世界 (historical world) unfolds: the living arena where human action and material reality continuously shape one another.
場面 (bamen) occupy the pivotal middle layer as threshold scenes — situated moments where the historical world breaks through into lived experience. Bamen is not simply something observed; it holds a coupling mechanism between historical world formation, everyday experience, and inquiry-based learning. In a single situated moment — sparrows in flight, a rustling sound above, observing an aerial corridor — the normally invisible structures of the historical world surface and become perceptible. Each of these moments or scenes makes absence visible ("I was wondering where the sparrows had gone!"), invites reflection ("Maybe they prefer to stay above ground?"), raises questions ("Is this behavior a result of climate change?"), and opens the conditions for shutai to emerge and act.
Transformative praxis is not an endpoint. When shutai acts — when collective practice reshapes local conditions — new scenes become possible, new absences and presences emerge, and the historical world deepens. The cycle does not close; it spirals. This is the metabolic quality of social life: not a system that tends toward equilibrium, but one that continually transforms through the world-making activity of those who inhabit it.
場面 (bamen): Coupling Infinity
Central to this process, I believe, is the coupling mechanism of bamen. As an embodied and episodic memory-image, bamen mediates our perception of absence and presence. Bamen is also a linguistic-aesthetic category. As one of the three ontological conditions of the Japanese language that the National Language scholar Tokieda Motoki identified (in addition to 主体 (shutai) and 素材 (sozai)), bamen composes an experience of a threshold scene. Finally, bamen is an epistemic-pedagogical medium that translates the threshold scene into threshold knowledge.
The pages dedicated to each part of this coupling present my current research findings alongside proposals for future inquiry into the subject. By clarifying the nature of this mechanism, I contend that it is possible to illuminate how the formative processes of becoming shutai are fundamentally intertwined with the metabolic processes of social change. This research is grounded in the conviction that in modern Japan — and perhaps across East Asia more broadly — where society has undergone profound ideological disruption through the loss of the Second World War, the collapse of the 1960s student movement, and the current paradigm shift from GDP-centered growth to SDG-oriented values, meaningful and lasting social transformation has been driven less by political protest and social movements than by reflexive learning and the gradual, transformative process of individual and collective becoming.