Such a flight of capital is exactly what worries Sergeant, who sells her work through a gallery on London's posh New Bond Street, not far from Sotheby's main auction site.

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For Karmarkar, her work falls into the category of decision neuroscience, which is the study of what our brains do as we make choices.

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But there is a very large difference between a work of fiction, and what Rand argued for or espoused in her articles and philosophical works.

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