Once he has proved that this arrangement can bury itself in a satisfactory manner, he plans to run a competition between robot clams with different shell shapes in order to understand what makes some more efficient than others.

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Wal-Mart ( WMT), too, frightened its weaker grocery competitors early on with its beefy and efficient distribution system and what some saw as its bullying of suppliers and workers, all to keep costs super low.

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You know, graduates, that efficient financial markets are sort of a special case of what some economists call rational expectations.

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Labour AM Jenny Rathbone asked what progress had been made in making houses more energy efficient amid concerns that some tenants were reluctant to turn on the heating for fear of receiving high bills.

BBC: Public Accounts Committee

Also what we're seeing is some long-term trends where companies are becoming so efficient in terms of productivity that they may feel that they can produce the same amount of goods or services without as many employees.

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Once we reach some sort of consensus about what smart, compassionate and effective health care is, then we can figure out the most efficient and cost-effective way of delivering it.

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