Why Ancient People Didn't See the Color Blue

<p>Here's a philosophical question for you. If a color doesn't have a name, can we still see it?  </p> <p>Many years ago, the human eye evolved to give us the ability to see about a million colors.  </p> <p>That's a lot.  </p> <p>Then how come, until very recently, nobody saw or even heard of the color blue?  </p> <p>Well, it's because blue just -- didn't exist yet.  </p> <p>Let's find out why.</p> --- Support this podcast: https://podcasters.spotify.com/pod/show/thewhyfiles/support