josh_ingu:
Could you reprise that in terms of the situation being discussed, where the person ignoring the behaviour (of a solo diver, which, without appropriate training and experience *could* be considered reckless) was a card carrying professional level diver?
-j-
OK really quickly from a real world perspective (I am getting really busy at work now) In order to rise to the level of criminal prosecution, or civil action (leaving aside such television terms as negligent or reckless) there must be some relationship between the defendant and plaintiff, or injured parties, in the case of a death, the family for instance. A dive professional engages in a realtionship with those contracted with him or her. A contract may be written or verbal, or in rare cases, implied. A contract involves an exchange, generally cash for services. A professional who agrees to let a novice diver tag along and then takes said diver into an environment that the novice definitively shows discomfort in, rising to the level meeting the mythical "reasonable man" test, in which anyone, regardless of training would recognize as a problem, and then substantively disregards said level of discomfort, leading to serious bodily injury, or death, is then into the liability area. A dive professional who, by the standards of other dive professionals, engages in substantive behavior, with a contracted party, that leads to death or serious bodily injury is exposed to liability. Substantive behavior in this instance would mean not only waving off, or ignoring the following diver; but actively doing such things as pulling the reg from the followers mouth, cutting hose, in other words committing a battery. There must also be a contract, express or implied between the follower and the professional. The very fact that someone is a "dive professional" creates no relationship between the professional and any party wandering down the road, or under the water. No more so than the possession of a license to practice medicine creates a legal relationaship between a physician and the general public. Terms like standard of care, and duty to act have no application to those outside of the medical profession and those employed by a government entity.
I apologize for the length, and I have tried to simplify as much as possible given the constraints. An accurate summary of the issues involved is not possible within the constraints of an internet forum.
Criminal and civil law are exceeding complex, the media has caused terms to enter the common lexicon that are misunderstood and cause no end of difficulty by perpetuating urban legends.
Anyone who wishes to be, or is, a dive professional should avail themselves of some of the resources out there about civil issues in particular, so that they can sleep at night.
The myth about not showing your professional card on a dive boat because you might be held liable for something has been around since the '70s that I can reacall; there has never, to my knowledge(the caveat) been a prosecution, either criminal, or civil, in the US of a dive professional who was not in a contractual relationship with a plaintiff.