

Noah Giansiracusa, "Robin Hood Math: Take Control of the Algorithms That Run Your Life" (Penguin, 2025)
Aug 20, 2025
Noah Giansiracusa, an Associate Professor of Mathematics at Bentley University and author of Robin Hood Math, dives into the world of algorithms and their impact on our daily lives. He discusses how tech giants manipulate personal data and emphasizes the need for individuals to take control of their decisions. Giansiracusa provides insights on better financial decision-making through understanding probabilities and advocates for greater algorithmic literacy. His approach empowers listeners to reclaim agency over personal choices and challenge the status quo.
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Make Your Own College Rankings
- College rankings are algorithms: subjective weighted sums combining many factors into one number.
- You can and should create personalized rankings that reflect your own values instead of accepting one-size-fits-all lists.
Universities Gaming Rankings
- Universities gamed U.S. News by shifting class sizes to hit arbitrary cutoffs like "under 20."
- Noah observed calculus sections being split to exploit the ranking rule without improving education.
Weighted Sums Drive Many Scores
- Weighted sums (weights × factors) underpin many scores and indices across life.
- Recognizing which factors carry heavy weight helps you prioritize what actually moves the metric.