For the most part, you don't want to optimize for speed, or bandwidth utilization, or any other type of efficiency — but for something more nebulous: user satisfaction.

在大多数情况下，优化的目标并不是速度、带宽利用率或者其他效率指标，而是更模糊的目标：用户满意度。

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Even though fuel cost less than 50 cents per gallon back then, few airlines were willing to give up fuel efficiency for the sake of speed.

甚至燃料的消耗减少了50％，也很少有航空公司愿意为了速度而放弃燃料效率的。

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With greater connectedness has come the ability for people to influence one another with more speed and efficiency.

随着连通性更加紧密，人们可以更加快速高效地影响其他人。

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Online technologies have become enormously useful for increasing the speed and efficiency of communication, but they have a long way to go before they become the primary source for creating and maintaining quality human relationships.

FORBES: Emotionally Intelligent Emailing

The speed and efficiency of the Equiduct model, specially designed for high-frequency trading of equities in the fragmented European market, is attracting institutions and bringing new players onto the market, says Fischer.

FORBES: How To Excel When The Market Shrinks: Find Your Niche

They believe that the speed and efficiency of processing data will be the key drivers for businesses in the years to come.

FORBES: The Massive M2M Business Opportunity (Part 1)