What did I learn from the experiment?
I have learned to make a circuit and how to make a homemade switch. The switch makes the light bulb go on and to make it go off. Oh and I needed a battery and a battery holder, a piece of cardboard, 8 cm and 4 cm of tinfoil, 2 pieces of wire, and a light bulb and a light bulb holder for the homemade switch.

How does what you learned apply to a pinball machine ?

When the ball drops into the bad hole theres it says your a loser and the ball drops in the good hole they get a piece of candy and it makes a complete circuit.