The video was called Rugby Smart. It came from the NZRU and I watched it as part of my coaching responsibilities in club rugby.
It was fronted by a bloke called Conrad Smith. He talked about the importance of putting your head in the right place at tackle time.
I first saw that video about two weeks after he first knocked himself out by putting his head in the wrong place. He's supposed to be a smart man, with a reasonable IQ - but none of those things gel with what he did last week; he again put his head where it shouldn't go.
That has caused, I'll bet, a bit of worry in the All Blacks. He's a key man, not just in leadership terms but in reading the game and on defence. Put that with the absence of Richard Kahui - even his Japan contract is supposedly in the balance - and the fact that Ma'a Nonu's knee has been bothering him all season and you have a pretty concerning midfield problem. Smith, I'd say, will be out for longer than just a few weeks this time, with his concussion past.
But do we really have a problem? Last week, I talked in part about the Fitzy syndrome - giving young, form players a chance and not being too surprised when they grab it. To me, it's a form versus experience debate. Sure, you can have (and should have) experience. But I believe a team can only stand so many out-of-form experienced players and there must be form players there to capitalise on that experience.