It's possible. I don't know. Sometimes people just come up with the same ideas over and over.
Classic example is the pyramid structures around the world. The fact that people found that it's easy to pile rocks that way in order to build tall stable structures doesn't mean that there was a single culture that span the entire globe.
Classic example is the pyramid structures around the world. The fact that people found that it's easy to pile rocks that way in order to build tall stable structures doesn't mean that there was a single culture that span the entire globe.