“This is the question that everyone always asks!”
But before Harrison Kingston answers it, he has a caveat.
There is no ‘cheat’ code. However much data and brainpower Morocco’s director of performance analysis pours into his laptop, it never spits out an infallible playbook.
He couldn’t unlock a ready-made route to goal and success when he worked at Liverpool, Tottenham Hotspur or Burnley.
He didn’t on Morocco’s journey to the World Cup semi-finals last month.
“If reality worked like that, you would see a lot more things happening every weekend on a pitch that looked a lot more prescribed,” Kingston tells BBC Sport.
“That I say or show something and then it would happen? That is not really the logic of football.
“Football, generally, is quite chaotic. You are trying to make sense of that chaos, trying to pick up some detail that you can take advantage of.”
But, just sometimes, the 36-year-old can glimpse one of his details among the many moving parts.
There is an example Kingston cites from his eight years at Liverpool. It was something one of the players did. Not Mohamed Salah, Sadio Mane or Roberto Firmino.
But, instead, the lesser-known Oakley Cannonier.
Cannonier is now part of Liverpool’s Under-21 side but, back on 7 May 2019, having just turned 15, he was working as a ball boy.
“We had just lost 3-0 to Barcelona in the Nou Camp in the Champions League semi-final first leg after outplaying them for the most part,” remembers Kingston.
“We came away scratching our heads about how we had ended up with that scoreline, but watching it back stirred a memory of our last-16 match against Bayern Munich two months before.
“The ball boys in Munich were like trained machines, getting the ball back in play so quickly. Talking to their staff after, we found out that it was a deliberate tactic; they wanted a fast rhythm to stop us having the chance to press them.
“At Barcelona it was the opposite, the ball boys were super slow. A goal-kick would take a minute, a free-kick would take 30 to 45 seconds.
“Looking back, we could see it was deliberate. Barcelona were a team who suited a slower pace to the game, rather than something that fed into Jurgen’s [Klopp] intensity.
“So the coaches and analysts took it on ourselves, with the kit manager who looked after them on Anfield match days, to show our ball boys a video about how they could help the team.
“We told them they were the 12th man, that they were not watching the game, they were in the game.”
In the 79th minute, with Liverpool leading 3-0 and the tie level, Cannonier took his chance to play a part.
Trent Alexander-Arnold played the ball off the shins of Sergi Roberto to win a corner. The ball skittled past Cannonier, just a few yards from where has was stationed in front of the advertising hoardings. But he ignored it. Instead he immediately bowled a spare ball, already in his hands, to Alexander-Arnold for the set-piece. Barcelona’s defenders, used to a slower rhythm, lapsed in concentration. Divock Origi looked up and made fateful eye contact with his team-mate.
A quick cross, a deft finish, bedlam. And, perhaps, a theory vindicated.
“Ultimately it is the players who take all the credit. They make the decision on the pitch and seize that moment,” says Kingston.
“Whether it [the goal] would have happened without our intervention, you never know, but you like to think that maybe you planted that seed and played a small part in a historic moment.”
In November last year, as he studied upcoming opponents Belgium in his current role, Kingston thought he could see another detail that may sprout into something significant.
Kingston’s fellow analysts Mousa El Habchi and Nabil Haiz joined him round the screen, along with Morocco’s goalkeeping coach Omar Harrack.
The four men watched, pointing and discussing what they saw in a combination of French, Spanish, Darija [a Moroccan Arabic dialect] and English.
And, finally, they plotted what they could do in response.