However, rather than have part of the proof done by hand, and part by computer, he has automated the entire proof, and done so in such a manner that it is a formal proof.

ECONOMIST: Just what does it mean to prove something?

The U.S. Attorney demanded that one of the paintings be returned as proof that the works were on hand.

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Companies in the learning distribution business, such as privately held Knowledge Planet , Saba (nasdaq: SABA - news - people)and Paul Allen 's Click2Learn (nasdaq: CLKS - news - people) on the other hand, hail MIT's plan as proof of the validity of their efforts.

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The camp is proof that sybaritic and sustainable can go hand-in-hand, "a laboratory for conservation tourism, a showcase, " Joubert says.

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Others consider it proof that Mrs Palin knows first-hand how regular families live, and that she is not isolated from reality.

BBC: Republican Convention diary

Despite several regrettable accidents, the proof of the promise of tiltrotor technology is in hand thanks to thousands of developmental flight hours that have satisfied or exceeded every requirement.

CENTERFORSECURITYPOLICY: Center for Security Policy | Honor the Marines�� Sacrifice by Perfecting and Deploying the Osprey

Despite several regrettable accidents, the proof of the promise of tiltrotor technology is in hand -- thanks to thousands of developmental flight hours that have satisfied or exceeded every requirement.

CENTERFORSECURITYPOLICY: Center For Security Policy

On the one hand, the collapse of the financial system has been taken as proof that bankers are incorrigibly, irredeemably naughty children.

BBC: If banks are treated as naughty kids...

On the one hand, the results should quell skeptics who have contended that there is no clear proof that Iressa works.

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