The second component of Evolution is a Process. Generating creatures to walk through a maze. Fitness is based on how long an individual can walk without bumping into a wall. Individuals know how to go forward, backward, left and right. The also know how to detect a wall.
Spinners simply spin in circles.
No matter what maze they're put in, they always walk and never hit a wall. Therefore they always receive the highest level of fitness. To solve this problem, a predator can be introduced into the environment. The predetor eats walkers it catches. Spinners are easy targets and quickly killed off.