When science reporter Sadie Dingfelder mistakes a complete stranger in the supermarket for her own husband, she realizes something's up. The tests and research that follow result in a face blindness diagnosis and her new book, Do I Know You?. In today's episode, she speaks with NPR's Ayesha Rascoe about the different experiences of consciousness everyone has, and how understanding the brain's capacities opens up a whole new world of neurodiversity.

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