That was worth reflecting on as Williams did his stuff at Eden Park on Saturday night.
Henry learned his trade in Auckland schools rugby, of course, where there is a long tradition of snapping up talent wherever you can find it. The schools on the wrong side of the deal sometimes call it poaching. Learning how to woo the parents of skilled teenagers might just have equipped Henry to win over the colourful Nasser and his charge.
Back in his days at Kelston Boys he reached out as far as Invercargill to recruit Mils Muliaina, an event recalled when it became certain the long-time Henry favourite had lost his fullback berth to Israel Dagg. While Dagg and Williams turned the French roosters into feather dusters, Muliaina was carrying Dan Carter's kicking tee.
This, so the story goes, shows Henry's necessary ruthlessness.
Maybe. Dagg's rapid ascent and Williams' sudden reinvention as a winger certainly show the All Black coaches are prepared to adapt and adjust at the last minute.
A sceptic might wonder if they're just making it up as they go along.
And aren't we still awfully thin in the loose forwards if McCaw or Kaino go down? Isn't it kind of late to be settling on a starting halfback? Has Slade's goalkicking come right?
Henry would probably find this kind of talk "disappointing", especially after a confidence-boosting win repaying the coaches' faith.
But whatever happened to the roosters on Saturday, history has shown us not to count our chickens.