Well, some people don't want to be given information, and some people do. It's often difficult to know where a specific person belongs; and it is a reasonable assumption that they most likely belong to the "don't want to know" group.
The problem with saying "some information should not be known" is that it does not specify who shouldn't know (and why).
Well, some people don't want to be given information, and some people do.
Whether a person want to be given information doesn't mean that he can handle the information. I can remember a few instance where I swear that I wanted information but wasn't well equipped to handle them.
The problem with saying "some information should not be known" is that it does not specify who shouldn't know (and why).
That sentence alone doesn't but the psychologist probably had a context in which he spoke it.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.