This thread has been seriously interesting to me.
Really though, reading this thread from the start has taught me quite a few things about what to consider when looking at vaporizer efficiency. Sadly it's also taught me a bit about how the snowball affect works.
It seems to me that Pk was just a little resentful that the PD was being treated in the way it was. That mixed with some VERY sound arguments came across in just the exact combination to appear as something more negative than I would imagine it was intended to be. Though he committed the cardinal sin of stating things that are not broken down into pure facts AS fact, I think he really did put a great deal of effort into his statements. I would agree with a large portion of what he posted, minus the points he made when the whole defending the argument-thing and about to be trolling on both "sides" started. It comes down to people posting statements that have some fact and some observation: when the observation is challenged the fact is often used in defense of the observation, and what is actually being argued for gets muddled.
Technically efficiency of what can be extracted from plant material is universal with any vape with an adjustable temperature, (REVISION, not sure if this is actually 100% true, as higher temps might destroy some thc.). An example of this is my VG and VS: i usually just burn the last bit of duff a LITTLE bit. I don't mind it, and still see it as healthier than smoking, (To a degree). I vape till I'm pretty confident I've gotten everything the vape can offer out of it, then slightly scorch it to make sure. If I put a PD bowl in the VG, could I get as much out of it, PHYSICALLY? Yes. But it would take longer, and I would lose the high during that time.
This is what vape efficiency really comes down to. How much can be extracted physically, which is technically all with any adjustable temp vape, and how quickly it does this. The first determines the amount, (Think of the analogy of a=x*v, acceleration equals distance times velocity.) The more taken out in a quicker manner results in a faster onset and intensity of the herb.
The issue of large hits vs small ones definitely comes into play though, but as a secondary thing: efficiency is efficiency, with how it affects humans coming into play as the second part of what to consider with a vape. Obviously smaller, purer hits get more absorbed at the end of the day, but the time it takes and how much the high will wear off should be taken into account as well.
Too Long didn't read:
"The perfectly efficient vape", of which there is none see the FC logo, would instantly vape exactly the amount a persons lungs could absorb, and nothing else. Calculating how much air needs to be moved to do this, how much a hit in a bowl will use, and how much the actual lungs could absorb though is virtually impossible though. The factors of even heating, speed of heating, airflow and subsequently lung absorption creates an exponential level of room for error in calculation a good vape style. One factors tweak could fuck the hell out of another's "efficiency". And guess what, this is where the buzzword comes into play: experience. Statements about facts are great, but unless you can break down, to almost a mathematical level, what each fact contributes to the whole picture, experience is the only way to boost such knowledge of facts into an accurate observation.
Oh jesus that turned into a much longer post than intended.......but hey, when in Rome...
And since I've already beaten the dead horse into a pulpy mess;
Devo, that has to be the coolest thing I've heard today on this forum. Imagine that, that a strain could have that much affect on vaping