Billions of people dream every night. Some scientists say dreams are just cognitive fluff, but others think they have an evolutionary purpose. Deirdre Barrett at Harvard studies dreams and believes that we're all thinking about things when we sleep. She's done research on getting students to write down problem-solving dreams before bedtime.
Dreams are weird, but can they be a scientific tool? Can they teach us anything about humanity? About ourselves?
This episode originally ran on April 12, 2022.
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