William James Sidis went from child prodigy to recluse. Try https://brilliant.org/Newsthink/ for FREE for 30 days, and the first 200 people will get 20% off their annual premium subscription.

Einstein's estimated IQ of 200 was cited by Amy Wallace in her biography of William James Sidis

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Special thanks to the following for permission to use their material:
10:35 Faces of the Forgotten on YouTube    • Harmony Grove Cemetery in Portsmouth,...  

Sources:
0:20 William J. Sidis’ IQ was estimated to be 250 - 300, according to Abraham Sperling, director of New York City's Aptitude Testing Institute
0:23 Einstein color photo: DonkeyHotey, CC BY 2.0 https://creativecommons.org/licenses/... via Wikimedia Commons
3:49 Fourth dimensional cube: JasonHise at English Wikipedia, Public domain, via Wikimedia Commons
4:30 Sidis Psychotherapeutic Institute: Maplewood Farms, Portsmouth, N.H. (Public Domain)
5:48 Jim Evans, CC BY-SA 4.0 https://creativecommons.org/licenses/... via Wikimedia Commons
6:12 John Phelan, CC BY 3.0 https://creativecommons.org/licenses/... via Wikimedia Commons
10:51 Myotus, CC BY-SA 4.0 https://creativecommons.org/licenses/... via Wikimedia Commons

Articles and interviews referenced:
4:45 The Prodigy: A Biography of William James Sidis, America's Greatest Child Prodigy by Amy Wallace: https://www.amazon.com/Prodigy-Biogra...