The same goes for Savea, the blockbusting Hurricanes wing who has been in the right frame physically for some time, but not quite there mentally.
He has been slightly off, but not by much, and that appears to have changed recently.He scored a try as a replacement against the Wallabies in Sydney, one as a starting wing against them in Wellington a week later, and turned up the volume even further against the Pumas.
Afterwards, he appeared quietly satisfied but in no mood to get ahead of himself.
"You guys [media] can be the judges about whether I'm back to my best but, for me, it's about playing rugby," he said. "I'm enjoying it and playing with a clear mind, really, not caring about making mistakes.
"That's the mindset I've gone through over the last few weeks. Obviously at the beginning of the year I didn't turn up in the right nick. But I'm really training hard and I've had a good support team around me."
Assistant coach Ian Foster said: "He'll be really pleased with that game. He's upping his workrate and taking advantage of the fact that he's really fit and the small skillsets are starting to come back."
Foster will also be pleased about the form of first-five Beauden Barrett, second-five Ryan Crotty, virtually flawless on his return from injury, and that of fullback Smith.
Barrett and Smith, in particular, are forming a spectacular attacking partnership.
"We put a lot of work into our structures," Smith said. "The way we play allows us to get into those positions where we read what the defence is doing and go from there."