Emily Oster is an economist whose analytical eye is often focused on how to make better sense of the data behind raising children. As professor of economics at Brown University her analysis of the facts and figures involved in parenting have made her one of the most influential thinkers in how to create healthier families in recent years. Her books include Cribsheet, Expecting Better and The Family Firm, and she’s the founder of Parentdata.org, a data-driven guide through pregnancy, parenthood and beyond. Her latest book is The Unexpected: Navigating Pregnancy During and After Complications. Joining her in conversation for this episode is another sharp mind with facts and figures, Tim Harford, senior columnist at The Financial Times, host of the Cautionary Tales podcast and author of his first children's book: The Truth Detective.

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BONUS - Pourquoi met-on un sapin dans le salon à Noel ?