In the last 50 years, the sheer density of the information environment has reached and surpassed the point at which privacy might be maintained by walls. And a legal system built on a presumption of information scarcity has no chance at protecting privacy when personal information is ubiquitous. We shouldn’t worry about particular technologies of broadcast or snooping—for instance, the way Facebook trumpets our personal information or deep packet inspection allows governments to trawl through oceans of Internet data. The most important change is not the particular technologies but, rather, the increase in the number of pathways through which information flows.