I like to think that a classic Rube Goldberg machine or even just a Hot Wheels track is similar to the idea of a program. You have the main loop, which is the t

I like to think that a classic Rube Goldberg machine or even just a Hot Wheels track is similar to the idea of a program. You have the main loop, which is the track or route of the car/ball, and then if certain factors come into play, they may change what happens to the car/ball or what happens to something else.