dreaming

is just the play of 'thought mutations' (i.e. Random variation) that is introduced into psychic life to create new ideas or self-awareness which can be retained if judged useful.

Psychologist Mark Blechner says the reason we dream is: [To] create new ideas, through partial random generation, which can then be retained if judged useful Dreams introduce random variations into psychic life and internal narratives. They produce 'thought mutations.' Our minds can then select among these mutations and variations to produce new kinds of thought, imagination, self-awareness, and other psychic functions.

Mark BlechnerThinkers

Mark Blechner