Carbon nanotubes are not fully tested in medical applications, but should be inert.

ECONOMIST: Storing electricity

The Russian's ability to serve out the set was not fully tested when, at 5-3, Djokovic double-faulted on the first point of a game for the second time, soon found himself two set points down, and then watched as a Davydenko sliced return floated past him into the corner.

BBC: Djokovic edges past Davydenko

He said the press was "on trial" and he questioned whether it would be fair to allow anonymous evidence which could not be fully tested or challenged.

BBC: Leveson Inquiry: Anonymous evidence ruling challenged

Organizations generally will not allow software to be released until it has been fully tested and approved by their software quality assurance group, he adds.

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"It's not fully certain how those savings will impact Medicare, " and they should be tested out before further changes are made, he said.

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