Page last updated at 14:44 GMT, Wednesday, 19 January 2011

Can Apple prosper without Steve Jobs?

Apple has unveiled market-beating earnings figures but the announcement that the company's chief executive Steve Jobs is to take further medical leave has worried some investors.

Newsnight's David Grossman examines why Apple's so-called rock star CEO is apparently so essential to its success.

Broadcast on Tuesday 18 January 2011.

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