In the two short years since Aileen Lee introduced the term “unicorn” into the VC parlance, the number of such companies has steadily increased from the 39 identified by Lee’s team at Cowboy Ventures to nearly 150 (and growing weekly) by most current estimates. Pundits and analysts have offered a variety of explanations for the phenomenon, with some identifying unicorns as the sign that the tech bubble of the late 1990s has returned under a different guise, others attributing the existence of such companies to structural changes in how innovation is funded in the economy, and the most intrepid of the group suggesting that the previously undreamt valuations are fully supported by the underlying fundamentals given the maturity and ubiquity of the internet, smart phones, tablets, and related technologies.