DotTune: AF tune technique without taking photos

I think Nikon's statement in their D800/e manual on AF Fine-Tune is very strange. On page 338 they state "AF tuning is not recommended in most situations and may interfere with normal focus; use only when required."

When I first read that....WT? What situations do they recommend and what situation would it be required? They really do not say. How may it interfere with normal focus? (Edit: They state "the camera may be unable to focus at minimum range or at infinity when AF tuning is applied") and the other side effect is the reason the OP's suggestion works "Live View: Tuning is not applied to autofocus during live view" which is a no brainer.  I just wonder if there are other catches that we don't know about.

Anyway, I've profiled my lens with Focal and manual means, but since mine really did not need much adjustment, I basically have it turned off for now.

Craig Bennett
http://www.craigbennettphotography.com