Why does homer have circe counsel ulysses to speak to teiresias?
telreslas is a seer, and, as such, can warn and advise ulysses with authority.
tetreslas has lived a long life, and, therefore, his advice and warnings carry the welght of experience.
telreslas is a man of great common sense, and his guildance comes from experience with sensible decisions.
telresias knows the natures of the different gods well and bases his advice on their various idiosyncrasles.