<i>if you&#x27;re an ancient man, what reason do you have for describing the color of the sky?</i><p>Ancient man spent a lot of time outdoors. I&#x27;d like to think that they were intensely interested in the color and appearance of the sky.<p>There&#x27;s also this rhyme[1]:<p><pre><code>        Red sky at night, sailors&#x27; delight.
        Red sky at morning, sailors take warning;
</code></pre>
On many days, my only interaction with the outdoors is when walking the dog. And yet I&#x27;m quite interested in the sky. It informs my selection of outerwear. (The local weather radar also plays an important part).<p><i>It&#x27;s almost always blue</i><p>Unfortunately not true in the Portland Oregon metro area.<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Red_sky_at_morning" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Red_sky_at_morning</a>