In the newest ad for Levi’s 501 jeans, a guy opens up a box and takes out a new pair of jeans. As he pulls the pants on, the entire street below him magically rises into his apartment as well -- carrying with it an attractive stranger who happens to be standing in a nearby phone booth. The two exchange a meaningful look and walk off into the night, arms touching flirtatiously. If you’re like a lot of people, you’ll immediately think: Wait, who uses a pay phone anymore? But what’s really likely to get people’s attention is that the...