Roughly two decades ago filmmaker Jay Rosenblatt started a ritual with his daughter Ella that he never expected would lead anywhere but the family archives. But the project that unfolded - an annual series of questions he asked Ella on her birthday until she turned 18 - eventually led to an acclaimed portrayal of a father-daughter relationship, and an Academy Award nomination.

On this episode of Paternal, Rosenblatt looks back on the origins of his celebrated short film How Do You Measure A Year?, the questions he asked of his daughter each year, and why the film serves as an intimate example of what it looks like when kids grow up in the blink of an eye.

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