Part of my ( former) work is in the interpretation of laboratory data, and I will tell you now that much of medicine...not just psychology... is an intuitive, art form. I have watched pathologists vote at biopies to determine if a patient has cancer. What could be more clear cut than looking at a slide of cells under a microscope? This drives me insane---we have to go on impressions, and I find myself trusting certain people's judgments...with nothing to back them up but their own sense of things.
On the BB we are making impressions based on an online persona... we receive limited and one-sided information at best and post our comments through our own personal filters. But somehow it works... I have found this BB to be very helpful. So post away, everyone!