You can learn a lot about technique, exercise selection, and programming from coaches who’ve walked the walk, particularly when they’ve been practicing their craft for more years than you’ve been alive. But in my real-life apprenticeship, the biggest lessons I learned from masters like Dan Pfaff, Ashley Jones, and Charlie Francis (as well as leaders in the special forces and business communities) were about how to be a better leader, communicator, and person.

Professional sports leagues across the globe look at youth talent in many different ways. Sometimes development programs appear very sophisticated and detailed, while in other cases they seem a lot simpler. At rugby and soccer clubs around the world, kids start in under-7, under-9, or under-11 junior teams and either rise through the ranks in the academy system or get snapped up at increasingly young ages by larger clubs offering the promise of a professional career.

In these sports, physical qualities are important. But in successful countries they’re always secondary to the technical and tactical adeptness youth coaches and scouts look for. They’re typically assessing young talent in the most real-world scenario in sports: the game itself.

So, to a large degree, what they’re seeing is what they’re getting, with technical, tactical, physical, and psychological elements being simultaneously expressed through skills on the pitch as players on both teams try to stick to their coaches’ game plans while dealing with the inevitable randomness and chaos of the game as it arises in a dynamic, ever-evolving system.

One tendency in athletics today is to assume every mistake is the short coming of physical qualities. 

When coaches review film and look at a game situation where a player failed to execute, they often attempt to find a perceived shortcoming that can be “fixed” with more strength, speed, or power work. 

As the saying goes, "if the only tool you have is a hammer, then everything looks like a nail."