In baseball terms, linear TV only scores with home runs.

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Students from England will continue to be able to sit WJEC GCSEs - but only linear ones, taken after two years.

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In a sense, but only if we cling to a linear scale of intelligence that places sea sponges at the bottom and humans at the top.

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Sandy and Leo Conklin's barn-wood-only lumber yard in Susquehanna, Pa. usually keeps around 40, 000 linear feet of barn wood beams and 100, 000 feet of board on hand to meet the demand from architects and builders.

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But a linear perspective is not correct when it comes to information technology, and information technology is not only influencing, but encompassing, one area after another.

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Coal and gas are still way bigger than oil or nukes in our grid, but my point is really just that an exponential curve can catch up with a linear one in a surprising way. 14% doubling every few years means we could be only a decade away from 100% clean energy.

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