Quite simply, because they are ignorant of how the market for this metal works.

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Women bought most of the products consumed in the home, but were ignorant of how they were made or the economics of their marketing.

ECONOMIST: Françoise Giroud | The

But he appears entirely ignorant of that science that discusses how to change behaviour.

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Not too much after seeing how that bank saw an opportunity to loan money to an ignorant and incapable borrower.

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And it said "many people at all levels were ignorant" about the basics of managing the national rules on waiting times, and how patients should progress through the system.

BBC: Loss of patient data was 'serious management failure'