I suppose this could be useful in places without electricity, but other than that this is a stupid idea.
I mean... it's a bearing. I'll carve you a wood fidget spinner w/ a pocket knife. My favorite part of the article was "discovered". College student "discovers" shit that spins actually spins.
Yeah they didn't discover anything, they used common sense.
most of africa has electricity at this point so..... useless.
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