• shalafi@lemmy.world
      link
      fedilink
      English
      arrow-up
      0
      ·
      4 days ago

      Only recently! For the past 10,000 years a 70-year span would not see a single significant change.

      (If I mix this up, someone correct me.)

      I think it was at Olduvai, or somewhere in the Great Rift Valley, that hominids spent 600,000 years hammering out the same exact stone tools.