Whether or not Mid-America was in error, New Life did encourage agents, in a 1998 brochure, to have clients leave it their trust remainders.

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Another common error is to simply move the old life to a new destination, which can also be problematic, she says.

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But it would be a mistake to conclude that online courses fulfill the same role in a person's life as a college education, just as it would be an error to equate four years of high school with some online study and a GED exam.

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Error, Jan 19: The distributor of the radio show, This American Life, was misidentified as NPR rather than Public Radio International.

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The error 404 is, if you like, the bane of the web user's life, but it is also what makes the web work because all the systems before were very big and cumbersome and they had systems of making sure that every link had an end.

BBC: NEWS | Technology | Net guru peers into web's future