The All Blacks have inflicted their ruthless streak on themselves since arriving in Scotland with a view to making an emphatic statement at Murrayfield on Monday morning (NZT).
Their previous performance has been a festering sore - that disjointed, erratic effort in their last test against Australia three weeks ago has brewed discontent and frustration within the camp.
It's obvious the All Blacks are simmering with self-loathing at the way they played against the Wallabies on October 20. They haven't forgiven their casual disregard for ball retention and other basic tenets of the game and won't do so until they have made amends with a performance in which they can be proud.
The intention, obviously, is to deliver that performance in Edinburgh and the analysis of the 18-18 draw in Brisbane has formed the basis of most of this week's planning and preparation. The problems have been identified and solutions are now being applied and the All Blacks took what they hope is another step towards restoration of normal service with their first outdoor, full-blooded training in the Scottish capital.
An hour-plus session in the icy rain was intense and dynamic and reflective of the fact that, regardless of what history and world rankings say about the likely outcome on Monday, the All Blacks know they will only deliver the performance they are after if they are clinical and accurate.