But they are not certainties for the Test XI, with Mitchell Johnson, Peter Siddle and Ben Hilfenhaus having impressed on the recent tour to South Africa.

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But DNA experts still deal in probabilities and not certainties.

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These are predictions, not certainties.

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Innovation requires risks, not certainties.

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Life is not a game of certainties.

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He quipped that he did not need it because he dealt in certainties.

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If we refer to the ancient history of science and recent cold fusion claims by Pons and Fleischmann (1989), we see that we should not lack the character to tackle the certainties and defend the violent attacks from all sides.

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Old certainties have changed and he is not certain that he will be voting Republican in 2008.

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