Free association (n.) read constructively is asked where it is going, not where it came from.
Free association (n.) wanders away from the affect into all sorts of complexes, so one can never be sure it is not a displacement standing in the affect's place.
Free association (n.) will uncover all my complexes but hardly ever the meaning of a dream — a newspaper sentence would serve as well, and it would no more decipher a Hittite inscription.
Free association (n.) never reproduces just anything: chance is excluded, and once the chain is traced the starting idea turns out to have been constellated by the complex all along, a sign or symbol of it.
Free association (n.) is the only rule analysis lays down for reaching unconscious obstacles: let the patient talk about whatever comes into his head, and note it without forcing opinions on him.
Free association (n.) leads anywhere to your complexes — a signpost or a Russian railway notice would do — so it tells nothing about what the dream itself is saying.