However Anna Brychan, director of head teachers' union NAHT Cymru, warned that her members were concerned about the practical difficulties involved with the proposals, despite their "great eagerness to make maximum use of new technologies in education".

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At the risk of being too simplistic to make silicon wafers, which is what you use to make computer chips and solar cells, you take a great big ingot of very pure silicon metal and then slice it very thinly.

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Carlos needs to make sure that the majority of his time is spent making great use of his narrow and exceptional skill set.

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"What you are seeing is a lot of people who are experimenting with these ideas in trials, and trying to figure out how can we use all of this great new information about social networks to make everybody's life better, " he said.

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To the great gain of people who buy and use PCs but to the great detriment of the profits of those who make them.

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