Free will is scientifically impossible | Robert Sapolsky, Paul Bloom, and Lucy Allais

Quick Overview

Robert Sapolsky argues that free will is scientifically impossible because all actions are determined by antecedent causes, citing neuroscience, biology, and physics, while Lucy Allais counters that complex, self-organizing living systems and fundamental physics do not inherently rule out agency or freedom, suggesting that science has not yet provided a complete explanation for consciousness or agency.

Key Points: Robert Sapolsky asserts that free will is an illusion because every action is the result of antecedent causes, including brain neuron activation milliseconds before the perceived action (0:00-0:18, 4:00-4:08). Sapolsky states that if people rejected free will, the world would be a better place, as it would eliminate moralistic blame and punishment (3:24-3:32). Paul Bloom, a psychologist, generally agrees with determinism but notes that the distinction between intentional and unintentional actions remains important for societal structures like praise and blame (1:50-2:22). Lucy Allais argues against a purely reductionist view, stating that complex, self-organizing living systems and fundamental physics (like bosons and fermions) do not automatically negate agency or freedom (7:15-8:24). Allais criticizes the "metaphysical" and "reductivist" interpretation of science that claims to have empirically proven the non-existence of free will (8:32-8:43). The discussion highlights the conflict between deterministic causality (Sapolsky) and the perceived reality of agency arising from complex emergent properties (Allais).

Context: This video features a panel discussion titled 'Free will is scientifically impossible' organized by The Institute of Art and Ideas (IAI), featuring neuroscientist Robert Sapolsky, psychologist Paul Bloom, and philosopher Lucy Allais. The central debate revolves around whether scientific understanding of causality, from genetics to neurobiology, precludes the existence of genuine free will, with Sapolsky taking a hard determinist stance and Allais offering a perspective that acknowledges scientific constraints while defending the validity of agency.