PERSON
Michael Tomasello
The comparative psychologist whose four decades of experiments at the Max Planck Institute established that what separates humans from every other primate is not raw intelligence but the uniquely human capacity to share goals, attention, and knowledge with others—the engine that built language, culture, and everything the word civilization contains.
Michael Tomasello is the scientist of
we. His meticulous comparative work revealed that a nine-month-old human infant does something no chimpanzee reliably does: points declaratively—not to demand an object but to share the sight of it with another mind, checking that the gaze is mutual and resting only when both parties know they are attending to the same thing together. That small act of
joint attention is, for Tomasello, the seed of everything distinctively human. From it grows
shared intentionality—the capacity to share goals, representations, and mutual awareness in ways that make genuine collaboration possible—and from shared intentionality grows
collective intentionality, the ability to participate in the norms, roles, and institutions that allow millions of people to coordinate behavior and build civilizations. The
cultural ratchet—the mechanism by which each generation inherits, improves, and passes knowledge forward without any individual reconstructing everything from scratch—depends