It brought us the iPhone–and changed the world. Now Apple is struggling to keep up with rapid advances in AI. Our correspondent assesses its future. China used to rely on Russian patronage. That power relationship has now largely been reversed (9:41). And remembering Amanda Feilding, who pioneered research on psychedelics (16:14).Listen to what matters most, from global politics and business to science and technology—Subscribe to Economist Podcasts+For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.

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