Players in their 20s and 30s can compensate for lack of skill with pure athleticism, but the true marker of skill is performance into your 60s.

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Bolshoi dancers have been known to place crushed glass inside each other's ballet shoes, or set an alarm clock to go off during a tour de force (a feat of technical skill during a ballet performance).

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His conclusion: in an industry full of smart people, brains and skill play little part in relative performance.

ECONOMIST: Performance is all, or is it?

If consistent performance is a product of skill as Mauboussin contends, than index fund investing is certainly a skillful decision for an investor to make.

FORBES: Index Fund Buyers are Skilled Investors

The Green and Whites' points came courtesy of tries from Greig Tonks and Tim Streather but these scores came from glimpses of individual skill in what was collectively a disappointing performance.

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What all persistence studies show is that active manager performance is mainly due to luck, not investment skill.

FORBES: Index Fund Buyers are Skilled Investors

To bring out their greatest performance they work with coaches who provide exercises for skill building and continuous support.

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However, if the lack of performance is not due to lack of knowledge or skill, then training is definitely not the solution.

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In the business world, where people and performance are top assets, having social and emotional skill in handling people might account for more than half of your success.

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When a leader develops the skill to convert negative conflict into creative tension, they have found the secret sauce for developing high performance teams.

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