MSilvia
Contributor
Why ?
Because, for example, it's easier to say, "Does your shop offer any technical diver training?" than it is to say, "Does your shop offer training for cave diving, wreck penetration, DPV piloting, rebreathers, staged decompression, gas blending, trimix, heliox, nitrox mixes >EAN40, and that sort of stuff?"
As another example, if someone said, "I want to become a more knowledgable and skilled diver, but I don't want to become an instructor and I've pretty much maxed out the non-pro training opportunities at my local shop." I might ask them if they've considered getting into any sort of technical diving.
Sometimes (not always) it's useful to have a catchall term for "diving beyond recreational limits", and "technical diving" rolls off the tongue pretty easily. If the gist is all you need to communicate, a litany of specific advanced diving methods isn't necessary. Obviously, "Hey Bob, let's go technical diving this weekend!" isn't very meaningful, because it doesn't communicate what it is you have in mind.