A group of engineers run the numbers on a thursday afternoon and see immediately that it just isn't practical/possible. The idea dies without ever getting out o

A group of engineers run the numbers on a thursday afternoon and see immediately that it just isn't practical/possible. The idea dies without ever getting out of the lab or even off the whiteboard. A kid stumbles into the idea though and has the gumption to actually carry it all the ways to a "working" prototype, which inevitably wows everyone who isn't in the field (pretty much everybody).