When two kids are fighting, they will use The Quarrel Solver to make them friends again. Both go to a different side of the machine. they need to turn the handles simultaneously. This is the only way the arrow in front will go to the middle of the screen. So they need to talk to each other again (instead of fighting) to turn the handle as it should. One the arrow is in the middle, they need to use their other hand to shake hands. When that happens, the thumbs-up light goes on. Quarrel solved.
The machine has a wooden body and basic mechanics inside. That’s because the secundaire technical school that built the machine, wanted these two departments to join MyMachine. The wooden body is a beautiful and effective design. The inside mechanics involve a specially designed system that measures the movement of the handles.