By now, there’s a pretty good chance that you’ve seen the new Star Wars movie — and for those who haven’t, don’t worry: no spoilers here. At long last, we’ve got a much-needed dose of Starfighters, Rebel Alliances, Lasers, and droids. BB-8, the adorable successor to R2-D2, has captured hearts and minds. As lovable as it is, and even with as much life as its creators managed to instill into it, in the end… it’s a super sophisticated prop. And now you’re wondering: how the heck does this thing work?
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