Friday assorted links
1. Video of good GeoWizard guessing, a little slow to start.
2. Does fluoride make you smarter? And “Lionel Penrose was a Professor of eugenics at University College London’s Galton Laboratory.”
3. Patrick McKenzie on Stripe.
4. The whole Cambridge Analytica thing seems to have been a load of b.s.
5. NYT profile of Matt Levine. And Bloomberg profile of Emily Oster.
6. The Monty Hall problem with many doors (goats).