Well, I can't speak for anyone else, but I have no facts and don't pretend to. I offered up a "possible scenario" and was sure to indicate that's what it was as that is what the special rules of this forum dictate. I guess I fall under #1, but I don't see how that is unfortunate. I see that done all of the time in A&I. Hypothesizing as a whole should not be belittled. Trying to imply that you know more than you do perhaps should.
You actually fall into group 3, I think...
I was basing my entirely hypothetical theory upon a comment that Racerx9365 made in the very beginning and then deleted...it referenced that there was some rushing around prior to the dive, I believe. Then, S_brown, who seems to have at least a LITTLE knowledge of the situation mentioned that it would be "difficult to stay with your dive buddy in the dark, especially if you don't have a light". Just throwing a theory out there...
I could mention that Izzy might have been gored by a unicorn...
So a diver with no lights, an empty tank, with a buddy too far away, gored by a unicorn... is another "possible scenario."
---------- Post added September 21st, 2013 at 12:55 AM ----------
I guess I fall under #1, but I don't see how that is unfortunate. I see that done all of the time in A&I. Hypothesizing as a whole should not be belittled. Trying to imply that you know more than you do perhaps should.
Hypothesis: a supposition or proposed explanation made on the basis of evidence, utilized as a starting point for further investigation.
Speculation: the forming of a theory or conjecture without evidence.
Baseless: without foundation in fact.
Would seem that what typically goes on is more along the lines of "baseless speculation."