“That it has to move? No, just like here's your whole body.…” — Stuff You Should Know at 3:54
“That it has to move? No, just like here's your whole body. You got everything. This does this, this does that. And the thing that operates at all is this little thing in the middle that's supposed to beat with great regularity. Yeah, but it does. And it's amazing. And we are going to explain today how it works…”
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