Like any risk factor, the impact of inflation is more complex and unpredictable than you might expect.

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One driving factor is that children born in the past with complex heart defects "didn't survive at nearly the rate that they do now, " said Jared O'Leary, a researcher at Harvard-affiliated Brigham and Women's Hospital and Boston Children's Hospital.

WSJ: Heart Defects Hospitalize More Adults

In the energy complex, geopolitical risk tends to be a prevalent supply shock factor, as I recently have observed with Libyan crude oil output.

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Obviously the stock story is not entirely about growth: human beings are very complex and their behavior cannot be reduced down to just one factor.

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But down in the detail there were complex issues surrounding which elements of a design (in the form factor, in usability, and in what was called the trade dress) were truly protected by law.

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Airlines would also need to factor passenger weight into their ticket pricing schemes, which would make an already-complex algorithm even more complicated.

BBC: Should heavy travellers pay more?

Notwithstanding the nasty asides at Grover Norquist, Buffett has been quite expansive on the complex tradeoffs inherent in investment decisions, and how taxes can be a pivotal swing factor.

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Police said Operation Factor, which led to the convictions and also involved the Crown Office and Procurator Fiscal service, was a "complex and protracted" one.

BBC: Two Scots admit sex trafficking across UK