Freud's theories of both pathologyd and of like psychology more generally, of how the human mind is built. These are people who were shell shocked from world or onri yes. And these are people who challenge freud's theories in a very different way. They're problems which are psychic in nature but real enough that it causes them to have remarkably a tragic life. This did continual, like return of the repressed past in a way that's destructive, but also produces a destruction in the future. I think it's pretty focken useful for thinking about trajectories of like continually maintaining borders,. conceptual and otherwiseo to the point at which things within the thing that's being preserved