This post is largely based on re-reading Freud’s Beyond the Pleasure Principle (1920). If one reads the book from a trauma perspective, the fort-da game he describes is more important than the Oedipus complex in the formation of character.
Readers familiar with Freud will recall his puzzlement over the existence of traumatic nightmares. Freud was surprised because he believed that the mind is organized around the pleasure principle, which would imply that dreams are a variety of wish fulfillment. But, what pleasure could there be to the recurrence of a traumatic experience in a dream, what wish could a nightmare fulfill? “People,” says Freud, “have shown far too little surprise at this phenomenon.” (p. 51)