And indeed, research on Silicon Valley law firms as well as on Dutch accounting firms, shows that moving employees do not only enhance the survival chances of the poaching firms but also decrease the survival probability of the firms from which they were poached.

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Muir said earlier that Cendoya and Jack's "probability for survival is good" with mild weather both day and night.

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More specifically, she cites research that shows the probability of start-up survival is 7% for a company started by an entrepreneur with no college education or industry expertise with both education and industry expertise, the odds of start-up survival rise to 77%.

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Ezekowitz also publishes a "survival analysis" method that put Harvard's win probability Thursday at 21.4%.

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