I don't totally agree with it. I think that in certain cases a client can see ten therapists and each might give a different diagnosis. It's contingent on how much the client discloses to the therapist. It also depends on the portrayal of factual content and how close to reality it is. In other words how close to reality is the clients interpretation of their world. Then also you have to take into consideration the experts of the therapist and effects of counter transference. There's too much room for error. I think that it's easier to come up a diagnosis for some people more than others. However it's hard to prove the accuracy of the diagnosis in certain individuals based on so many variables. I know in my particular case I didn't disclose my life or feelings to my T 100%. She gave me a diagnosis Of which I disagreed with. I didn't take it seriously because I knew that she didn't have all of my info and perhaps if I went to someone else I would get a different diagnosis. However with the diagnosis that she gave me she labeled me in her world and everything from there on was questionable, invalid, and extreme. Eventhough I told her that there's so much information that she doesn't have and that I didn't understand how she can come up with a diagnosis not having enough information she then said that she didn't need the rest of the information. She's wrong and I know. She labeled with me with bpd and I was done for. I had no voice.