It was published as a book I believe: https://www.amazon.com/Unanswered-Question-Harvard-Charles-Lectures/dp/0674920015 https://www.amazon.com/Unanswered-Questi

It was published as a book I believe: https://www.amazon.com/Unanswered-Question-Harvard-Charles-Lectures/dp/0674920015 https://www.amazon.com/Unanswered-Question-Harvard-Charles-L... It's about music though so it's good to listen to it if possible.