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Like how we never notice air. Oh wait...

• pavlov 11y ago
  Today we know what air is, but for ancient people it was far from obvious. Plato describes it thus: "There are similar differences in the air; of which the brightest part is called the aether, and the most turbid sort mist and darkness; and there are various other nameless kinds which arise from the inequality of the triangles." http://classics.mit.edu/Plato/timaeus.html http://classics.mit.edu/Plato/timaeus.html Mist, darkness and aether are completely unrelated to any modern definition of air.
  • codingdave 11y ago
    But they noticed it. Their accuracy is not really the point - they did notice their own environment.
    • pavlov 11y ago
      They observed effects within the medium like moisture and darkness, but did ancient people really "notice" the medium itself? Depends on the definition of "notice", I guess.