A Burger, Untouched by Human Hands

Simplicity is the hallmark of good engineering.

Not so for the designs submitted by seven collegiate teams competing in this year's Rube Goldberg Machine Contest, held at Purdue University. The event has become an annual celebration of engineering inefficiency, where whimsy meets byzantine absurdity.

This year, for the 21st such competition, participants were asked to design a machine that assembled a hamburger, and the team from Purdue won on its home turf for the third time in

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