Question: Just how does Batman's grapple gun work? In Batman Begins, Fox says, 'It's magnetic' so I assume it can attach to anything metal. But the magnet would have to be extremely strong to support the weight of Batman, which begs the question how does it then detach from what he's fired it on? Also, where does he keep all the wire for it, and how does it have the magic ability to wrap its self around the Joker's ankle, when he's been thrown off the building and Batman shoots it at him?
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