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As Path launches its new API, CEO and cofounder Dave Morin explains why the company is eschewing advertising in favor of virtual goods.

Finding the perfect investor can be a Goldilocks-type challenge. Here's how one company found that 'just right' investor. Here's a tale of a business that was looking for the "just right" buyer.

Finding the perfect investor can be a Goldilocks-type challenge. Here's how one company found that 'just right' investor.

This past December Jim Weatherall and I wrote " A Geometric Theory of Everything " for Scientific American , describing progress on unified geometric theories of gravitation and the Standard Model of particle physics. My personal contribution to this progress, a developing model called E8 Theory, was introduced three years ago in a paper titled " An Exceptionally Simple Theory of Everything ." Almost immediately after this paper appeared, physicists and the interested public began a lengthy process of considering and discussing this new theory's merits and faults. Not surprisingly, the initial response was largely critical, with most commenters encountering some unfamiliar mathematical structures in the paper and responding with appropriate skepticism