Oh, here's another. (I'm on a roll now!)

Shields.

LUKE: Han, my rear shield's down!

HAN: Oh gosh, honey, mine too...

How do 'shields' work? Or 'light' sabers?

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If something is in me which can be called religious then it is the unbounded admiration for the structure of the world so far as our science can reveal it... of the manifestations of the profoundest reason and the most radiant beauty, which are only accessible to our reason in their most elementary forms...
Albert Einstein