Davidoff describes the hype in Silicon Valley that leads to soaring valuations- hype about Nest includes founder Fadell's reference to his vision for home thermostats that would change the world. All the participants benefit says Davidoff, Facebook, Google, Microsoft, venture capital firms and firms acquired such as Nest. Nest was acquired by Google for $3.1 billion, when it would have been valued at about $2 billion before Google showed interest. The hype lets Google present itself as the company of the future, and boost its image, which means a lot in getting investors to support the huge valuations.