Development of a very high level of skill is often desirable for economic, social, or personal reasons. In his 2008 book
Outliers, Canadian journalist
Malcolm Gladwell proposed the "10,000 hour rule", that world-class skill could be developed by practicing for 10,000 hours. This principle was disputed by other commentators, pointing out feedback is necessary for improvement, and that practice is no guarantee of success. In his 2019 book
Range: Why Generalists Triumph in a Specialized World,
David Epstein argues that a period of sampling different activities (whether musical instruments, sports, or professions) can be helpful before choosing a specialization. Epstein argues that many tasks require a variety of skills which tend to be possessed by more well-rounded people, and finding a task which is a better fit to one's personality and interests can overcome the advantage otherwise provided by having more practice earlier in life and attempting peak performance as a younger person. Someone who has demonstrated a high level of knowledge or skill in multiple disciplines is known as a
polymath, or in musical performance, a
multi-instrumentalist. A related synthesis was offered by Waqas Ahmed in
The Polymath: Unlocking the Power of Human Versatility (2019), which examines how individuals across history have deliberately cultivated breadth across disciplines alongside deep expertise, and argues this capacity, termed versatility, represents a distinct and trainable human capability. A long-standing question is to what extent skills can be learned versus the degree that innate talent is required for high-caliber performance. Epstein finds evidence for both sides with respect to
high-performance sport in his 2013 book
The Sports Gene. For thinking tasks, the
heritability of IQ has been extensively studied to try to answer this question, though does not necessarily map directly onto skill level for any given thinking task. A study of professional and master
tenpin bowlers found that average scores declined less than 10% from age 20 to age 70.
Skill building Skill building is a hands-on
active learning and
experiential learning by-doing approach to
education, in contrast to
lectures and
rote learning where the student plays a very passive role. ==See also==