Therapists who treat violent criminals cannot both respect their clients’ right to confidentiality and be sincerely concerned for the welfare of victims of future violent crimes.
Conclusion
Therapists who deal with violent criminals can't simultaneously respect their clients' right to confidentiality and be sincerely concerned for the welfare of future victims.
Evidence
Reporting a client's unreported crimes would violate the client's trust that what they say to their therapist is confidential.
And failing to report a client's unreported crimes would leave the client out of prison, free to commit more crimes.
Evaluate
The conclusion is very harshly worded. It's saying that X is impossible, so to prove this dude wrong, we'd only need to come up with one instance in which X is possible.
Can we think of a scenario in which a therapist who treats violent criminals could manage to both respect the client's right to confidentiality while also showing real concern for potential future victims, were that client to remain out of prison.
The premises are framed as an Binary.
The therapist either reports the violent crimes she learns about from her client or she remains silent about them (doesn't report them).
The author thinks that In Either Case, the therapist has failed to do one of the two things that supposedly can never co-exist. We would need to think of way where in one of those two words, the therapist could still manage to do both things.
When a therapist does report the crimes of their client, could they still be respecting confidentiality and also looking out for future victims? They're definitely looking out for future victims, but it's hard to say they're respecting confidentiality. If you tell the cops what you know, you have failed to keep what you know confidential.
When a therapist does not report the crimes of their client, could they still be respecting confidentiality and also looking out for future victims? They're definitely respecting confidentiality. Could they still be looking out for future victims? Maybe. Maybe they don't consider their client dangerous to future victims? Their violent crime was a crime of passion, not a symptom of a dangerous person?
Goal
Let's find an answer that helps us argue that a therapist could simultaneously keep a client's crimes a secret while still showing proper concern for potential future victims, were that client to remain out of prison.