Ever since the publication of The Making of an Expert in 2007 Anders Ericsson has been credited, or blamed depending on how you look at it, for creating the so-called '10,000 hour rule' which says that to be good at something — really good — requires about 10,000 hours of practice. Though not guaranteed such devotion to an endeavor can lead to expert status in the chosen activity. Since then it has captured the imagination of everyone from music teachers and sport coaches, to parents looking for a pathway to success for their precocious offspring.