I guess it depends on the therapist/type of therapy. I have been to the type who do the "blank slate" stuff, and act all high and mighty of "I know exactly what to do/how to do it/when to do it" when they are really just putting on an act.

I'm not one for the "woovy groovy, lets pretend to be the know-it-all therapist and not let you in on what I'm doing" type. I tend to be down to Earth and transparent about the process. There are many times I tell my clients "I don't know" or "This is just a guess" or "I need to ask because I'm clueless right now".