MADEONEARTH

Report from the world of backyard technology

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Johnny Jetpack

It’s difficult to match the sophisticated and subtle humor of throwing a dummy off something really high and watching it fall to the ground, but to be fair, it’s a low-tech laugh.

Luckily, Nathan Arnold of Seattle has discovered that strapping a dummy to a compressed-air jetpack, launching it more than 100 feet in the air, and then watching it fall to the ground is three times as funny and provides some geek appeal on the side.

Arnold’s performance-art dummy show and his eternal desire to maximize mayhem led to the idea of launching the thing — Johnny, by name — as high in ...

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