In fact, for every 10% reduction in R-squared, an investor improves his performance by 0.8 percentage point, after adjusting for size, style and other factors, according to Prof.

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Adjusting them sometimes only moves the point of distress to a new position, while in other cars there seems to be no way in which to reposition them higher or lower.

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My point is is that, while we have been adjusting, we will continue to adjust to achieve the objective.

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While Mr Romney has come under a good deal of fire recently for gaffes, or shooting from the hip, it is only fair to point out that on China, Mr Obama has been triangulating - or adjusting his policy closer to those advocated by his critics - on trade relations with China.

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