In the original Star Trek, some aliens who have no corporeal form any more, take over the bodies of some crew members, with their permission. Of course, eventually they are expected to return them but they choose not to. There is a bit of this going on here as Jadzia asks her closest crew members to allow her previous incarnations to inhabit their bodies. I guess when everything is made up, the writers can just make up some more stuff. If there is a real positive, it is further evidence of what Odo is. I do get tired of the Curzon guy at times. He seems like he was kind of an Ernest Hemingway figure.
