DevonDiver
N/A
The industry also call it Open Water and Advanced Open Water. The industry is responsible for the confusion over what "advanced" means.
PADI call the 2nd level course AOW
SSI call their second level course Advanced Adventurer
The SSA AOW course is more akin to the PADI MSD course
BSAC have an Advanced Divercourse, which is their second highest level and includes non-accelerated deco, and expeditionary diving, amongst other things.
Advanced Diver and Advanced Open Water are very different terms...
Open Water is as basic as it gets. An 'advancement' of that is hardly 'advanced diving' by anyone's definition.
In reading the "special rules" for the Advanced Scuba Discussions forum, reference was made to "migrating from the traditional recreational diving envelope into more advanced areas...." Thus, I thought avoiding the word Basic might help eliminate some confusion.
The sticky in the Advanced Diving area makes it very clear what the definition used is. Nobody reads the sticky.
Personally, I think the word Recreational should have been used instead of Basic. But, as Pete points out, there are some major difficulties involved with changing that.
Bear in mind that the structure of the board was put together nearly a decade ago... and the diving industry has evolved a lot since then.
Back then, if you were doing 'advanced diving', then you knew where the line was drawn. Nowadays we have recreational solo courses, recreational trimix etc. Nitrox has become a commonplace course, available by online learning. More divers are in involved with cavern and cave diving. More recreational divers use doubles or ponies. etc etc
The whole issue has become very 'grey'.
When the 'Advanced Diving' area was put together, it was with the purpose of allowing robust debate by very experienced divers. That is clearly explained within the 'sticky'. The nature of the topics anticipated meant that some flexibility was needed. You don't want 'sugar-coating' in a high-level scuba discussion.
However, when basic level divers post basic level discussions in that area, the robust debating style is highly likely to cause offense, insult and aggravation.
It's a clash of mindsets... that often causes nasty arguments.