I think the cards have been stacked against solo since it has been taboo for so long.
It isn't really taboo. Even the PADI policy endorses the concept of it - with the right training, experience and attitude.
PADI
views it as a form of technical diving, in order to
differentiate it from the PADI recreational diving program. Basically, they mean it is
outside of mainstream recreational diving..and the only other non-military/commercial/scientific form of diving that exists is
technical. So they lumped it into that.
However, no technical or cave diving agency defines it as such. Which matters most?
Also, it is worth considering PADI's definition of technical diving:
PADI defines technical diving as: "
diving other than conventional commercial or recreational diving that takes divers beyond recreational diving limits. It is further defined as an activity that includes one or more of the following: diving beyond 40 meters/130 feet, required stage decompression, diving in an overhead environment beyond 130 linear feet from the surface, accelerated stage decompression and/or the use of multiple gas mixtures in a single dive.
I can see the risk and equipment making it viable to call it as technical as "overhead environment".
I disagree. The risks are very different and not comparible.
The equipment is
not the same. You realise tech/cave uses more than just a set of doubles right??
You realise that those 'extra' tanks carried by tech divers are not just 'ponies'?
Again, this is confusion on the need for redundancy...
Solo Redundancy - Solo divers need an alternative, independant air source. In the event of primary air source failure they will not have a buddy available to share air. They need an independant air source to enable them to effect an
immediate ascent to the surface. Redundancy is preferable to CESA. However, CESA is still a valid option for a solo diver.
Tech Redundancy - Tech divers need the ability to isolate a valve or regulator, should it leak, whilst still accessing the gas they have planned and brought to survive that dive.
Direct access to the surface is impossible (no CESA) and your buddy may not have sufficient quantity of gas to share for you to reach the surface.
It is easy to assume that, because tech divers are capable of safe solo diving, that the two disciplines are comparable. As a consequence, it needs to be remember that solo divers are not trained or equipped to do tech diving. That is the more important side of the comparison.