Psychiatrist and writer Iain McGilchrist argues that the brain's split into two hemispheres has shaped human culture far beyond the old cliché of emotion on the right and logic on the left. Speaking for the RSA's public lecture series, McGilchrist lays out how the left hemisphere narrows its focus to grasp and manipulate the world in isolated, abstracted pieces, while the right hemisphere takes in context, relationships, and the whole picture at once. He traces what happens when one mode dominates a society rather than the other, from bureaucracy's love of rules and categories to art and religion's dependence on the right hemisphere's broader attention. The lecture is rendered as an RSA Animate: a hand-drawn whiteboard illustration sketched in real time under McGilchrist's voice, visualizing each point as he makes it, from brain diagrams to metaphors about maps and territory. Cognitive Media's animation and Abi Stephenson's editing keep the argument moving briskly through a subject that could easily get abstract, closing on McGilchrist's claim that modern culture increasingly favors the left hemisphere's narrow grip over the right's wider view.