Outreach

A commemorative article for Research Encouragement Award from the Society of Evolutionary Studies, Japan, describing the evolution of my interests since childhood and the background behind the conception of Universal Anthropology.

An English interview article in RIKEN People introducing my work on universal anthropology, the emergence of institutions around shared resources, the research environment at RIKEN, and my future goals.

A newspaper feature in The Asahi Shimbun on theoretical research concerning gift-giving frequency and the expansion of inequality.

An interview in De-Silo’s Research Curation series introducing my research on kinship structures and family systems through mathematical simulation, along with the broader idea of ‘Universal Anthropology.’

An explanatory article on three mechanisms by which cooperation evolves: direct reciprocity, indirect reciprocity, and network reciprocity.

A public-facing article on the evolutionary conditions under which cooperation can emerge in humans even when it does not bring direct individual benefit.

An essay discussing how features of stem-family systems, such as primogeniture and multigenerational co-residence, may affect the spread of inequality.

A public essay examining, from the perspective of family-system evolution, why stem families are especially prevalent in Japan.

An essay reconsidering whether the historical similarities between Japan and Germany can be understood through family systems and kinship structure.

A public essay proposing, from a physics perspective, that repeated gift exchange can transform social structure and explain major transitions in human history.

An essay showing through simulation how universal gift exchange can generate inequality in both wealth and prestige.

An article explaining through mathematical models how simple exchange processes can produce inequality and the emergence of the super-rich.

A public-facing essay introducing the statistical-physics perspective on the distributions and mechanisms underlying inequality.

An article explaining mathematically how gift exchange can generate not only solidarity but also inequality and power structures.

A public-facing essay using Papua New Guinea’s intense gift practices to show how gift exchange is tied to honor, competition, and social evaluation.

An essay explaining gift exchange as a mechanism that creates obligation, social relationships, and cohesion.

An article showing how apparently exceptional marriage rules such as sibling marriage in ancient Egypt may be understood within broader kinship principles.

A public essay showing that practices such as polygyny follow structured regularities within broader kinship systems.

An essay on how connection and competition around marriage shape kinship structure, interpreted through mathematical models.

A public-facing essay on why similar cultural and social patterns repeatedly emerge across different regions, explained through mathematical models and simulation.