Tuning is getting the most out of an arrow flight as possible froma bow. It usually involves adjustments to the bow and the arrow to insure the best possbile flight. A straight flying arrow is optimal with fletchings doing as little as possible to stabilize the arrow. A well tuned bow/arrow combo will also help in forgivingness in flaws of the shooter.
I'm not trying to argue with you guys..... I see it as getting true arrow flight out of your DESIRED setup.
I don't see that as argueing at all.
FWIW, my comments on efficiency were actually meant as a side note in response to another post.