Does anyone else think this is pointless? Unless I'm going for my Tech Diving merit badge (three more cave dives and I get to glue it on my drysuit), why do we even need to bother defining it? I'm doing the diving I'm doing; you can call it recreational, technical or the new and improved low cal version, tech lite.
Regardless, any dive will kill you; its just a matter of the experience/training needed to reliably end the dive with a reg in your mouth. We all have (or should have) the experience and training to do that in the environments we dive in.