I've been offline for several days....
Define trained. All of the people described in this dive were "trained" as they held a c-card.
I'm seeking more training for 3 reasons and this thread just re-affirms my thoughts on this . One, I prefer to be as educated as possible in activities I participate in as I don't like to be a liability to those around me. Two, my family is diving and I am responsible for them. Three, I have not met that many people in life that I can say with any certainty would not panic or atleast would think rationally and think things through in a pressing situation. Consequently I task my self with the safety of those around me.
Oh, I think a good basis for beginner training would include OW, AOW, and Nitrox - not that you actually learn a helluva lot in any of those, but it's a good combination start. Any diver who wouldn't do at least that much is one I might enjoy going to sea with in very easy conditions, like Key Largo's Molasses Reef with no current or chop - but I wouldn't think of them as seriously into this life threatening sport no want to be on the same boat headed into better dives. Those 3 cards and the associated dives under Int supervision do not equate to experience, but it's a good start with good attitude.
Serious learning comes more from experience, best done starting on those easy dives and working up, I suppose. I've know a few SB divers who never bothered to get more than OW, but worked their way thru a lot more experience - resentful about the boats who wouldn't take them because they didn't have their AOW formality card and/or Nitrox card so useful on wreck dives. Good divers that they may well be, I must wonder why they avoided paying the start up dues in training...?
And along with the learning thru experience, I try to add a lot more to my own, like -what-if discussions, here and with my home dive bud as well; drills on freshwater practice dives as well as on safety stops; maybe even drills on real dives to avoid complacency; and so forth.
All that said, I still screw up at times - badly on a few times, so I suppose it takes even more than all that for some of us to prevent from getting in trouble, and I bet I have more mistakes to make - but at least my bud & I work in self and mutual rescues, some thru impromptu learning experiences...