Observing things vs. actually doing them

At a course with Cătălin ZAHARIA – inspirational model in structured communication, for me; and top speaker – Get a result now! we had to pick a role – client (stating a problem), coach (helping the client solve its problems), observer (noticing things, giving feed-back at the end). For most of the time, I used to think that: The role of a client rules. The role of a coach, if he does his job well, is good. The role of an observer is not that great. I’m starting to see some advantages in the ability to not be 100% focused on the problem, from the position of the observer. The observer role is not that bad. Sometimes, just noticing thing is good enough.