It took a while to figure out the proper siting, anchoring, and operating parameters required to run a fish farm so far from shore, but Brian, like any dedicated entrepreneur, was persistent.

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He said "part of the parameters" being considered was to run a newly adapted supertax for the rest of Mr Hollande's term, rather than limit it to two years.

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Since the future is uncertain, they are run thousands of times, with different values for the parameters, to produce a range of possible outcomes.

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"He gave me the parameters, and until I screw up, he's letting me run with it, " Zillo said, adding that they will vary the types of meetings in each city.

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