Joachim wants to take his little sister to the zoo. He knows that if he gets out on the highway and takes the last exit that he will be at the zoo because that is how he got there when he went with his mother. His friends have told him that there is a quicker way to get to the zoo if he takes the streets through town, rather than going out on the highway. However, Joachim decides to go to the zoo by way of the highway because of ________.