I've not experienced one, & even then, one would not be enough to truly know.
As Robin suggests, everyone has their own definition of shave ready, & preferences.
I would have to imagine that Lynn really know's what he's doing. That said, he must hone a fair few each day, & every now & then he's bound to let one slip by that's not quite there, surely? Despite his God status here, I understand that he's only human!