Without a time machine, that opinion is no more valid than people keeping a consistent mapping and storytelling language by drawing in the dirt. There is evidence on both sides.
For example, the picture of the entrance stone on this page uses spirals:
Without a time machine, that opinion is no more valid than people keeping a consistent mapping and storytelling language by drawing in the dirt. There is evidence on both sides.
For example, the picture of the entrance stone on this page uses spirals:
https://en.m.wikipedia.org/wiki/Prehistoric_art