Yes
I really agree with conversus.
If our cave ancestors could take a piece of animal skin and make a once living animal into dinner, neddles, thread, sewing gut, etc and who could preserve meat and veggies, after praying for them to offer what ever animal brother they were hunting to give up willingly its life for the survival of the People. People that charted the skies and made up stories about what they saw. I am sure they could figure out how to entain and feed themself during the long boring winter. If they could paint on walls, and their wearing apparl without the help of stencls, computers and rulers, things they saw in nature or their minds, the clouds, etc, why wouldn't they be capable of putting them on small pieces of left over tanned hides?
Imagine AIOs distant ancestors and the rest of the willing creative people of this thread ancestors "The A. Nonny Mouse Promotional Tarot Deck Parts I, II & III", living in that time. (I just realized that I am writting a plot for a Jean M. AUEL novel.)
Be at Peace, and have a very peaceful and pleasurable night.
Kathy