Experience shows that most businesspeople who owe their success to either nepotism or monopoly will never admit it.

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This is not a far-fetched possibility – the financial crisis in the fall of 2008 certain qualified as this for many other investors.

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Ajit Jain’s business at Berkshire has become well known in the business world for being able and willing to insure risks that other insurance companies can’t handle. For example, Berkshire insured a billion-dollar contest once held by Pepsi

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GDP per capita (Gross Domestic Product divided by number of people in the country) is the overall metric economists use to measure a country’s standard of living.

GDP per capita in the United States generally doubles about every 25 years in the US. This can be seen tangibly in the broad array of goods and services that we have available to us today that our parents and grandparents did not.

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Many calculations of stock market investment performance fail to adjust for dividends and/or for inflation. This leads to tremendous confusion about actual performance of stocks over time.

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This is probably the one disingenuous note in the entire letter. (Versus resignation letters from most other CEOs which would be 100% disingenuous.)

However, the underlying truth is that the creation and growth of the company under Andrew as CEO from inception through last year was a miracle of accomplishment.

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At one point, Groupon was sort of two companies in one – the US operation that was built and run by a team of executives recruited by Andrew, and the international operation that resulted from an acquisition of a company founded by the famous Samwer brothers. The Samwers enjoyed broad autonomy to run the international operations largely separately from the US operations for several quarters.

In the last year, one of Andrew’s big challenges was to integrate the US and international operations into a single global business.

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Andrew is referring to the use of non-standard financial metrics in the company’s SEC filings, particularly in the IPO filing (S1).

As someone who was in the room as an observer at the Groupon board when the decision to use these metrics was made, I think Groupon was honestly trying to provide additional information that investors would find useful, which mirrored the way management thought about running the business.

However, no good deed goes unpunished, and widespread media paranoia about business metrics still lingering from the 2000 dot com crash combined with other missteps on Groupon’s part combined to make the use of those non-standard metrics highly controversial and ultimately negative for the company.

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Over the last 20 years it has become customary in business for executives to claim to be “resigning to spend more time with my family” when they have actually been fired. It has become such a cliche that it is now a sort of running joke in corporate-speak.

(The additional subtext to the joke is that most executives are not liked by their families, who would prefer that they not spend more time at home and try to get them into a new job as quickly as possible.)

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Our venture capital firm, headquartered in Menlo Park, California. We fund companies that make software, mobile apps, wearable computing devices, games, 3D cameras, networking gear, and now rap communities.

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