Paul Graham on Twitter: "After heading 20 corner kicks, memory performance was reduced by about half for 24 hours. https://t.co/gJu5JampZa"

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1. Michael Ajemian‏ @macajemianuts 24 Oct 2016
  Replying to @paulg
  
  I died in sports head injury. People'd rethink sport if they knew they could forget life by 1-n bonks + bad doctors. Shear=amputation
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1. Michael Ajemian‏ @macajemianuts 24 Oct 2016
  Replying to @paulg
  
  your books and lisp have been exceptionally helpful in recovery of brain function. Just 1 data point, but I think it's a good one
  
  1 like
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1. Oliver Germer‏ @OliverGermer 24 Oct 2016
  Replying to @paulg
  
  Given the research on concussions in the NFL not really surprising - but sad... Long term effects will be interesting.
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1. Vieille Chanteuse‏ @mxschumacher 24 Oct 2016
  Replying to @paulg @gordon_zhu
  
  so surprising that repeated physical shocks have an impact on perf. of the the most complex system in the known universe
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1. Karm‏ @karmsingh 24 Oct 2016
  Replying to @paulg @BBCWorld
  
  curious how convention became such that any impact to the head isn't default considered bad. Anyone surprised headers hurt!
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1. Salman Mustafa‏ @esalman 24 Oct 2016
  Replying to @paulg @BBCWorld
  
  can't seem to find a link to the paper...
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1. Jesus ☧‏ @Space_NoSleep 25 Oct 2016
  Replying to @paulg @BBCWorld
  
  except that no one ever headers 20 corner kicks in a game
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1. Manuel Matés‏ @maqrollmates 28 Oct 2016
  Replying to @paulg
  
  Concussion, CET, contact head sport can create CTE https://en.wikipedia.org/wiki/Chronic_traumatic_encephalopathy … and they continue playing https://en.wikipedia.org/wiki/Concussion_(2015_film) …
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