The essential element is that Cam had to authorize someone to act on his behalf.

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An essential element in that strategy is an attempt to ensure that the inevitable blame game being played out between the political parties is kept as short as possible.

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Supporters of board diversity, Erika Karp included, have long argued that boardroom diversity is essential element in the creation of a board culture of inquisition and accountability.

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Some ministers, led by Mr Prescott, think that regional representation must be an essential element.

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An essential element in a new regulatory framework, then, is that systemic risks have to be measured, priced and regulated.

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Then on Sunday, Health and Human Services Secretary Kathleen Sebelius said that a public option is "not an essential element" of overhauling the health care system.

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But only when we cross that chasm can our platform of engagement be adopted as the essential second element in our workplace.

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