Bluetooth, as another example, has been around for a much longer time but is still increasing in popularity.

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Because of technology, there are less people needed to manufacture and service the durable equipment that we use because this stuff is working better and for a much longer period of time.

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"Massmart is well positioned as a springboard for sub-Saharan Africa, but we believe that it will take a much longer time period for the company to earn its cost of capital in Africa, " said Janney Montgomery Scott analyst David Strasser.

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Portfolio working has evolved from a growing belief that guarantees of permanent full-time employment cannot continue for much longer.

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That is true but slightly unfair, as sendmail has a much longer history than most MTAs, and it has been clean for quite some time.

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For a start, the order-to-delivery time is very long, up to two months, much longer than customers for true mass-market cars would be prepared to wait.

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The broader question is whether what worked for Yale and Harvard, for a time, can be a successful strategy for a much broader range of universities over a much longer period.

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