On Tue, Jul 18, 2017 at 6:54 AM, Willem Ferguson
<[email protected]> wrote:
>
> Shouldn't we at some stage get the terminology accurate and replace SAC in
> the UI throughout with RMV?
No, I really don't think so.
The scuba world has a lot of random terminology that may be mis-used,
but is effectively standard. SAC is just one o those things.
The fact is, everybody uses "SAC" the way we do. Yes, yes, yes, some
training material says that that is the "sit in chair for 20 minutes"
volume, but let's face it, that's just a stupid training thing, and
even then it's just a single-time explanatory exercise (or not even
single-time).
The "sit in a chair and test your actual surface consumption" thing is
completely meaningless.
So everybody just uses SAC and RMV entirely interchangeably, with some
people apparently even using SRMV (where the "S" is to clarify that
it's translated to surface equivalents rather than being
depth-dependent).
And then some people talk about "bar per minute" for a particular
tank, just because then they can allegedly just do the mental
calculation depending on depth.
It's all purely BS. Some crazy tech diver that has the "there is only
one correct way" mode of diving will have their particular very strong
opinions of exactly what each particular TLA means, but it's all
pointless.
In the end, SAC is just the most common thing to use, and we use it
the way everybody uses it in practice, simply because the "other"
possible meaning of SAC is completely pointless and nobody ever really
talks about it.
I am very against the pointless "pilkunnussija" culture of some tech
divers, that try to define things in particular ways that make no
sense. Let's use accepted normal *common* language rather than
anything else.
Absolutely *everybody* knows what we mean by SAC rate. And the ones
that are offended by our use of standard terminology can be offended.
It's their problem, not ours. Let's not take on their mental baggage.
Linus
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