This simple classification tree seeks to answer the question "Will you understand classification trees?" At each node, you answer the question and move on that branch, until you reach a leaf that answers yes or no. This model can be used for any unknown data instance, and you are able to predict whether this unknown data instance will learn classification trees by asking them only two simple questions. That's seemingly the big advantage of a classification tree — it doesn't require a lot of information about the data to create a tree that could be very accurate and very informative.