One of the All Blacks' secrets remains a mystery and unquantifiable to even them. It's the hidden force of being the only country in the world where rugby is the national sport.
The benefits of that are largely intangible but unquestionably significant. Even as the sporting programs in most New Zealand schools diversify, rugby still commands hearts as much as it does minds. The lure of the First XV remains magnetic in a way perhaps being in the elite swim squad never will.
School cultures are still, consciously or not, driven by the unwritten premise that young men in New Zealand should play rugby. The idolisation of the First XV in traditional boys schools gives out both overt and subliminal messages that there is something heroic and almost patriotic about aspiring to be an All Black.
The growing commercial and media profile of leading All Blacks endorses this notion of rugby as a game for noble warriors.