The math implies of course that most other players are either moving tremendous volumes or trying to enter the market for (at best) little marginal gain.

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The results are significant because the motorcycle industry fell 40 percent in 2009, with a smaller drop in 2010 and only marginal gain in 2011.

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Volume has been light in the up-move and yesterday the index rallied late to post a marginal gain, but today is the first sign of some real anxiety across the pond.

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That is a sensible, but marginal convenience gain over using an enabled phone to do the same thing.

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Unfortunately, the fight over whether to greenlight Keystone XL is creating collateral damage that vastly outweighs the marginal benefit either side will gain from sticking to its current position.

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Any realistic, practical plan to limit tax expenditure cuts to a high-income group would require a phase-in of the cuts or other accommodations, which would add to marginal tax rates, reduce the potential revenue gain, and make the resulting tax change more regressive.

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Such income is taxed once at the corporate rate of 35% and again when it is passed through to the individual as a capital gain or dividend at 15%, for a highest marginal tax rate of about 44.75%.

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