“we figured out that we could build a set of little…” — Freakonomics Radio at 7:57
“we figured out that we could build a set of little transducers. You can imagine a fat bracelet, sort of like cyberpunk kind of thing with, I think, 24 or 12, I forget the exact number, little transducers that are hooked onto the bracelet, like gemstones. The one I'm looking at looks like 12. I also have to say, Ben…”
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