Is privacy a recent fiction or a neglected human right?

Google’s Chief Internet Evangelist, Vint Cerf, recently spoke at the FTC’s Internet of Things Workshop where he suggested that privacy is a recent construct our society created when technology made it possible. Is privacy an anomaly, as he suggests, or is it an important right which technology has enabled and which we are neglecting to the point where we are negating it so we can share more stuff with each other?