Following Saturday's 18-point loss to the Brisbane Lions, coach Dean Laidley highlighted that turnovers – particularly North's 31 ineffective or clanger handballs – had cost them the game.
Simpson said Laidley had addressed the issue in the rooms post-match.
"We saw a few bits of the vision after the game, three or four passages of play that we could have done better," he said. "It wasn't a whack over the head. It was just a learning thing.
"It's a thing Dean's been really good with, especially with the kids. It's all about learning for us. The quicker we can learn, the better we will be."
Simpson added that the search for the best possible kick into attack had encouraged his teammates to be too handball happy.
"There were times on the weekend where all of us could have just got it in there (inside 50)," he said. "I think with our forwards we've got, they're contested-marking forwards, and sometimes we're just trying to overplay it to get that perfect kick.
"When there were times to just get it in there, we decided to try to create another handball and perfect play and it came unstuck.
"A lot of goals these days are kicked from turnovers ... probably more than any other way. It's whatever team can turn over the least wins the game."
Such is the case for North's opponent this week, St Kilda, which remains undefeated after 10 rounds.
Asked what made the gap between the Saints, a white-hot Geelong and the rest of the competition so large, Simpson said both sides created a constant sense of urgency.
"Even when there's no-one around, you feel like there is," he said. "Especially with younger teams, you tend to panic a little bit. Even the older blokes do that a little bit as well.
"When you're playing Geelong ... sometimes you're clear but you just think, 'Geez, I've got to get rid of this otherwise I'm going get ruin down or pinged'.
"From what I can see with St Kilda, they're exactly the same with perceived pressure around the ball and all over the ground. Sometimes it forces teams to make decisions that they wouldn't normally make."
Simpson said North would still take confidence into the game but if it was any chance of beating St Kilda, "it's going to have to be a scrap".
"Sometimes you've just got to pull the trigger and if you see the first option, take it," he added.
"Trying to create the perfect play against A-grade teams just doesn't work that way.
"They're due [for a loss]. They've been up for a long time and their confidence is pretty high. But they've lost a key ruckman.
"We're not going in thinking we're going to lose."
A boost will come from senior players who returned through the VFL last weekend after lay-offs with injury.
Forward Matt Campbell and defenders Daniel Pratt and Lachlan Hansen will push for senior recalls while tagger Sam Power (leg) will hope to pass a fitness test.
