Paradolia takes place in the psyche and makes us see familiar things in random shapes. The human mind always has the desire to be able to name things and thus creates this illusion.
Our brains are so eager to recognize patterns and correlations they see them where there are none. It works different for everybody but symmetry is an important aspect in that process. Is that why we humans are bothered if something not seems to be in its right place?
A very recognizable form of paradolia is seeing a horse in the clouds or a monster under the bed. In a less harmless way it involves preconceptions.