Joseph Henrich's The Secret of Our Success provides the empirical backbone for Appiah's philosophical claim. Humans are not the smartest animals because individual humans are extraordinarily intelligent. Individual humans, stripped of cultural context, are remarkably fragile. What makes humans extraordinary is their capacity for cumulative cultural learning — the ability to absorb, store, and transmit knowledge across generations through social networks. The intelligence lives in the network.
Michael Tomasello's A Natural History of Human Thinking reinforces the point. What distinguishes human thinking from the cognition of other great apes is not individual intelligence but shared intentionality — the capacity to engage in collaborative activities with shared goals, shared attention, and complementary roles. Human thinking is, at its evolutionary root, collective thinking. When AI augments the network, it is augmenting the natural habitat of human thought. When AI diminishes the network — by replacing collaboration with human-machine interaction, by reducing diversity of perspectives — it is degrading the habitat.
The Berkeley study documented this degradation in real time. Workers who adopted AI tools expanded their individual scope but reduced their collaborative engagement. Delegation decreased. Each person did more, but they did it more alone. The network's links weakened even as the nodes became more productive. This is the dangerous pattern: an increase in individual capability accompanied by a decrease in social embeddedness.
Appiah adds a dimension organizational theory typically misses: the network's value is not merely instrumental. It is constitutive. The relationships between people in a working team are not merely means to an end. They are, for the people involved, part of what makes their lives meaningful. The colleague who challenges your thinking. The mentor who sees potential you cannot yet see in yourself. These relationships constitute a form of human flourishing that cannot be measured in productivity metrics and cannot be replaced by a machine.
Appiah's treatment of the network draws on his longstanding engagement with communitarian thought (which he critiques while preserving its genuine insights) and on the empirical literature on distributed cognition and cumulative cultural learning. The AI-era application emerges from the observation that productivity metrics systematically obscure what network degradation actually costs.
Intelligence is distributed. Human cognitive capacity lives in the relationships between minds, not within any single mind. Individual genius is the exception; cumulative cultural learning is the rule.
Constitutive, not instrumental. Relationships are not merely means to productive ends. They are part of what makes a life meaningful — a form of human flourishing that cannot be measured by output metrics.
The Trivandrum case. Twenty engineers working with AI tools represent a concert-hall transformation, not an instrument upgrade. The connectivity of the network determines what individual capability can accomplish.
Headcount reduction as epistemic loss. The team that converts productivity gains into staff reductions is betting that intelligence resided in the nodes. If the bet is wrong — if intelligence was in the network — the leaner team is not merely smaller but dumber.