Without getting into the semantics of accuracy vs. precision, for those that think measurements and accuracy are unimportant, they better hope someone else is, or they won't be able to replace their systems. Accuracy and specs give us a baseline for making progress.
The semantic issue was accuracy vs "perfection" not "precision"
Accuracy should certainly matter to the artist themselves, to the engineer and producer. I'd agree it has a place there.
To the end user it is entirely relative. What does Carnegie Hall sound like to you? Might not be what I happen to enjoy about the sound of it, and or we may perceive it entirely differently. Then again, I might like to enjoy a bit more warmth on top of what it actually sounds like. You might not. What's the point - we're both enjoying our respective versions of reproduction by assembling gear that accomplishes what we are after.
The thing I find ironic here is that quite often those audiophiles that claim to be searching for "accuracy" are often the very same ones that get completely caught up in specs and measurements and end up with systems that may measure well but sound nothing like live, unamplified, acoustic music, which as you say is the real yet unachievable standard for accuracy. Someone asked the question "have we really completely lost our way?" Well, yes you have, if you consider how a component measures more important than what it actually sounds like.
I also found it interesting that the system Onhwy61 points out as an example of "accurate" has strong bloodlines in the most critical components (front end and speakers) in pro-audio, including ATC monitors, Benchmark DAC as well as a Behringer Equalizer. It's a beautiful, well-designed installation for sure. I don't know that it might suit everyone's preferences, which is just my point. Pro-audio purposes are a specific use where I believe accuracy is very important, where professionals working in that world actually depend upon it. I just don't think that extends to the end user necessarily. Certainly if it floats your boat that's the way you should go. My own limited experiences with pro-audio gear suggest to me that it does not float my boat at all. This is not meant as a criticism of Shardone's system - heck I might find it sounds magnificent. Just some general thoughts and observations.