But then they should be found all over - thrown weapons were lost all the time.
Witness arrowheads - every plowed field in the American midwest has arrowheads. Because they were used for thousands of years, and lost for thousands of years.
Witness arrowheads - every plowed field in the American midwest has arrowheads. Because they were used for thousands of years, and lost for thousands of years.
Maybe you have passed such things multiple times without ever recognizing their true origins!
Have look at the pic in the article, not exactly polished ball bearings.
Those would be easy to ignore and nature makes plenty of more spherical rocks. Most rivers have shores with better looking "spheres".
I don't have the expertise to comment on if that is correct or not. I'm just repeating what 'facts' that I trust the reporter verified, though i'll admit to seeing enough examples of reporters not verifying facts to have doubt.
Combine that with the fact that we're temporally very close to the Indigenous occupation. Whereas there's over a million+ years of geological processes to affect those artifacts original provenance.
Also, if we haven't been looking for crudely rounded stones we aren't going to have much of a sample size to say whether or not they are, to use archeologist's favorite word, ubiquitous.
I'd wager most people aren't aware that spheres aren't common in nature.
We can start to unpick the mystery with insights like that.