https://apnews.com/b6105717d0694517b63faff002a1c9ef

YANKTON, S.D. (AP) — In their quest for a winning Rube Goldberg-like device, Erin Knight and Sarah Stoddard of Yankton High School found that, in this National Science Olympiad event, simplicity is the best path to success.

And that helped them placed seventh nationally in the "Mission Possible" event at the Olympiad recently, the Yankton Daily Press & Dakotan reported.