But perhaps the calculation has now become that the banking system has had two years to get ready and can now weather such a storm.

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His system, which greatly eased astronomical calculation, had been published in 1543, to little ideological agitation.

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The problem was that those doing the calculation seemed unaware of how the corporate tax system actually works: in arrears.

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And in the private sector insurance system, oftentimes insurers make the same calculation.

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And your operating system is just one of many factors that go into this calculation.

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Language like this frightens those who see the NHS as a health-care system driven purely by response to need, rather than by hard calculation about cost.

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And a back-of-the-envelope calculation based on the 1.8m sorts of organism recognised so far as species under the Linnaean system, on the rate at which new species are being discovered and on such ecological matters as the average number of parasites (themselves new species) that each free-living species harbours, suggests the final total may be around 30m.

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