L'auteur Robert Wright explique "la somme-non-nulle" -- le réseau de coïncidences coopératives qui a guidé notre évolution jusqu'à présent  -- et son utilisation possible pour aider à sauver l'humanité aujourd'hui.

Robert Wright sur l'optimisme

Human history shows a striking trend: as societies grow more complex, cooperation across cultures and continents deepens. From Stonehenge to the Silk Road to today’s global economy, fortunes become increasingly linked, and moments of moral progress emerge. The ongoing rise of interconnectedness means that harm or hatred in one part of the world now ripples everywhere. Even as technology raises the stakes, moral evolution — recognizing our shared interests — remains essential for survival.

Cooperation, Not Conflict, Drives Humanity Forward

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