F-22 Engineer Intentionally Crashes into Another Driver's Vehicle to Save His Life

Duane Innes, a manager on the F-22 Raptor project, knows his physics. When he saw a truck driving in front of him on the highway veering out of control, he decided to rescue the driver:

"Basic physics: If I could get in front of him and let him hit me, the delta difference in speed would just be a few miles an hour, and we could slow down together," Innes explained.

So he pulled in front of the pickup, allowed it to rear-end his minivan and brought both vehicles safely to a stop in the pull-off lane.


Link via Gizmodo | Photo: Jim Bates/Seattle Times

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I suspect that the engineer, who knows perfectly well what "delta" means, said "delta" and then realized he was talking to a newspaper reporter who hadn't the slightest clue, so he immediately said "difference" to explain, and the newspaper reporter who hadn't the slightest clue didn't understand that the two words mean the same thing, so he put "delta difference" in his story and nobody at the newspaper caught it either.

Could be wrong, but that seems to be how newspapers work these days.
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