This is a great illustration of the adage, if at first you don't succeed, try, try again! What a smart kid. Audri plans on becoming a theoretical physicist when he grows up. At seven years old, I had no idea that a theoretical physicist was even a real thing.
He saw a video made by the band OK GO (the guys who danced on treadmills - remember them?) with a Rube Goldberg machine and that was the inspiration for his creation.