Whether the system can then be turned into a practical method of drug delivery is more questionable.

ECONOMIST: Drug delivery

Stopping exploits rather than cleaning up the malware they leave behind may be a more practical method of preventing PC infections, Moy argues, given that only a few thousand unique exploits appear every year, while more than 30, 000 new strains of malware appear every day.

FORBES: Connect

Only recently, however, has the method become practical, thanks to vastly more powerful computers.

ECONOMIST: MONITOR

The practical result of this method is that every month, all of the 12 seasonal factors change, which means that all of the year to date monthly SA data also changes.

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While committing itself to the principle of providing accurate information to consumers, the government has warned that there are "real practical difficulties in establishing traceability to identity method of slaughter to the point of consumption".

BBC: MPs want curbs on 'unacceptable' religious slaughter