One possible issue with this article is that its focus is on students - their 'job' being to learn as opposed to producing or delivering something, which is the aim once their skills are learned.
Learning is often done best in small chunks e.g. when learning to rock climb it is usually best to climb no more than 6 hours a day, every other day. But when the skills are learned the climber may spend 15 hours a day, 3 days straight to climb their dream route and they may well sleep hanging from the side of their wall too.
I'd be interested to see how much time the elite players devoted to their work when on tour as professional musicians in later life.
Learning is often done best in small chunks e.g. when learning to rock climb it is usually best to climb no more than 6 hours a day, every other day. But when the skills are learned the climber may spend 15 hours a day, 3 days straight to climb their dream route and they may well sleep hanging from the side of their wall too.
I'd be interested to see how much time the elite players devoted to their work when on tour as professional musicians in later life.