They're just as eager to earn profits and reinvest them for maximum return as any razor-blade manufacturer, software programmer or energy company.

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After a stretch in private practice, Bernstein landed a job with the FTC in 1970, where she impressed Pitofsky by bringing a case against a razor-blade company distributing samples in a newspaper's Sunday comics section.

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This spring the Park Avenue Armory will be the site of his artistic expedition to Mars, complete with a biology lab for Martian plant cultivation. (Sachs borrowed the technology from marijuana growers.) And this month his show "Work" opens at New York's Sperone Westwater gallery, featuring pieces like a Japanese tea ceremony and a version of Roy Lichtenstein's razor-blade painting "Duridium, " made here out of screws.

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The significant attraction to companies producing glucose monitoring devices is that the business model is a classic razor-and-blade concept as an overwhelming portion of sales by these companies consists of the recurring test strips.

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The clip shows a woman using make-up and a razor blade to make it appear that she has cut one of her wrists.

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Luminex has a razor blade business model, just like 3-D, where it sells the machine and once you buy the machine you have to buy the consumables, or the razors, that run through it.

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