PARADOX

A paradox is a logically self-contradictory statement or a statement that runs contrary to one's expectations. It is a statement that, despite apparently valid reasoning from true premises, leads to a seemingly self-contradictory or a logically unacceptable conclusion. A paradox usually involves contrary-yet-interrelated elements that exist simultaneously and persist over time. They result in "persistent contradiction between interdependent elements" leading to a lasting unity of opposites.