He definitely wasn't saying average, though I would be sure that those have gott... | Hacker News

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CreateChange on Aug 19, 2017 | parent | context | favorite | on: We Are Nowhere Close to the Limits of Athletic Per...

He definitely wasn't saying average, though I would be sure that those have gotten better as well, but simply due to better training practices.

goatlover on Aug 20, 2017 [–]

Also, better shoes and track surfaces.

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