It is rare for a Harvard Don to start a book by saying “I don’t know”. That’s exactly what Tom Eisenmann does when he drills into the reasons start-ups fail. Many studies and tomes exist on successes but hardly any on failures.
Dr Eisenmann’s book fills this gap brilliantly. There is hardly any agreement in both academia and the real world on both — what constitutes entrepreneurship much less as to how to define failure. He defines failure as “early investors did not and never will make money” and creates compelling frameworks to show failure in all stages of a start-up’s

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