Frequent use of metaphors is a key characteristic of the LEARNING PATTERN.
We learn new things be associating them with items that we are familiar with. Thus, the frequent use of metaphors.
Metaphors is a figure of speech that compares one thing to another thing that is completely unrelated with one another.
For example:
Life is a journey.
Life and journey are two things that are unrelated but it is used metaphorically because life can be like a journey because it is process we have to take, Like like journey may seem endless but both have a designated destination.