Well, that title's quite a negative start isn't it? I don't mean it to be and hope by the end of this, we'll see that there are some positives to be gained too. But first, what made me think of this?
I recently worked with a group of about half a dozen participants, most of whom didn't know each other. They'd all signed up for the workshop voluntarily and were free to leave at any time.
During the session, one participant (I'll call them P) seemed to stand out from the crowd.