Let me start with my background briefly: I am indeed a hard-core science "nerd" by education and by profession, I have a degree in Chemistry from one of the best chemistry schools in the world. But, I have a blue-collar background, and I also worked as an Apartment Complex Maintenance Man during my college days to fund my education. I think your stereotypes for science nerds doesn't reflect the reality. Most lab techs are incredibly hands-on people, either out of passion or out of necessity. Nowadays, I try not to turn too many wrenches at work just because it doesn't make sense to have your highest level scientist turning wrenches. But, sometimes I can do the work better or faster than the vendor or the lab tech, so I will do it when it is needed (or when I feel like getting away from my desk and the daily BS for a while
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So, in the fields of science, technology, and mathematics, it is EXTREMELY IMPORTANT to have a clear, concise, and narrow definition for technical terms. This is very fundamental to these fields, we MUST start with clear and concise definitions. The reason is that when I speak with other science colleagues from around the world, we must be 100% certain that we are indeed talking about the exact same item based upon these clear, concise, narrow definitions. If not, then we never even get out of the gate, and cannot possibly progress the field. So, this is why I pointed out the technical detail--If you are using EQ then you are NOT Pure Direct! Now that you have explained further, I get what you are saying, but if we are all using the exact same definitions and terms, then there would be no need to explain further, right?
Now, back to your welding analogy--I get it! I agree, I don't go looking to fix problems that don't exist. On the other hand--If the person using that welding equipment has a firm understanding of the fundamentals of welding AND has a firm understanding of all of the fundamentals of these fancy settings, then the newer equipment should be expected to produce superior results. BUT--if the operator doesn't have any of the FUNDAMENTALS--then they are screwed any way you look at it!
Fundamentals are ALWAYS the name of the game here. If you don't get that right, then you absolutely cannot get to the high level work. And if you try high level work without getting the fundamentals, then you are setting yourself up for frustration, failure, and possible safety hazards too.
To bring the comment back full-circle: Clear, Concise, Narrow definitions are the fundamentals of communicating on a technical level.
So, the AVR is in Pure Direct, but the processing is being done external to the AVR. Done.