This is not to make the apology for superficiality - my aim is rather to understand its correct use in everyday human survival.
Why should one need superficiality? I don't know the full answer, but here are some pointers.
According to Arthur Koestler (1), the most-cited authority on creativity, every creative act involves bisociation, a process that brings together and combines previously unrelated ideas. He contrasts bisociation with association, saying that association refers to previously established connections among ideas but that bisociation involves making entirely new connections among ideas.
Koestler’s definition addresses all forms of creativity, whether in art, science or humor.