Part of it was also what was in vogue and what humans wanted to depict with art. Or allowed by the Church (idol worship and whatnot). Not to say it wasn't a ski

Part of it was also what was in vogue and what humans wanted to depict with art. Or allowed by the Church (idol worship and whatnot). Not to say it wasn't a skill to be discovered and pioneered. But there were reasons in addition skill floor why it developed when and how it did.