Humor, evil, kindness, atrocity, care: each are based on the situation and individual perspective of the recipient. What one may find humorous may be vile to another. What one may find kind, another may find annoying.
We are influenced by those around us, and yet we hold onto a sense of individuality. Perhaps the location of these differences is where biological and environmental influences collide. Then again, there are differences between a parent and child. It is very possible that one may have ideas or feelings completely contrasting those of the people most influential to him. Different from teachers, parents, friends, idols…
Is it fate, perhaps? Individuality? Or is it simply the outcome of a rare combination?
If the last holds true, there is no such thing as “uniqueness,” all personality traits and preferences are simply the result of two forces. A problem of math.