Until then, you'll just have to put your trust in strangers and hope they have at least a basic understanding of the rule of thirds.

ENGADGET

At the height of its mainframe dominance in the 1980s, the rule of thumb was that IBM accounted for half of industry revenues, two-thirds of the profits and three-quarters of the market cap.

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For 200 years, the chamber has operated on the understanding that any rule-change requires the vote of two-thirds of its members.

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