In 1967, psychologist Stanley Milgram began a series of investigations about the small world phenomenon. Milgram and his collaborators had people attempt to get a letter to a final recipient by sending it to a friend who was, in turn, likely to be friends with the final recipent. Each person in the chain proceeded likewise until the letter was delivered to the final recipient. Milgram found that the separation between two randomly selected Americans in this way is about 6 "hops". His experiment recently got me thinking of a related question:
Pick a group of people who live in NYC whose members collectively know everyone else who lives in NYC. What's the smallest number of people you'd need for that group?
For the purposes of answering the question without resorting to loopholes, let's assume that brand new arrivals (in town less than 3 months) don't count and that "know" means that each person considers the other an acquaintance...that is, something more than just someone they recognize or see daily. Any guesses as to the smallest group size? Better yet, is there any research out there that specifically addresses this question? Or is it impossible...are there people living in the city (shut-ins, hermits) who don't know anyone else? I'll share my best guess in the comments.
Some notes from day 2 at PopTech, with a little backtracking into day 1 as well. In no particular order:
The upshot of Thomas Barnett's entertaining and provacative talk (or one of the the upshots, anyway): China is the new world power and needs a sidekick to help globalize the world. And like when the US was the rising power in the world and took the outgoing power, England, along for the ride so that, as Barnett put it, "England could fight above its weight", China could take the outgoing power (the US) along for the globalization ride. The US would provide the military force to strike initial blows and the Chinese would provide peacekeeping; Barnett argued that both capabilities are essential in a post-Cold War world.
Juan Enriquez talked about boundries...specifically if there will be more or less of them in the United States in the future. 45 states? 65 states? One thing that the US has to deal with is how we treat immigrants. Echoing William Gibson, Enriquez said "the words you use today will resonate through history for a long time". That is, if you don't let the Mexican immigrants in the US speak their own language, don't welcome their contributions to our society, and just generally make people feel unwelcome in the place where they live, it will come back to bite you in the ass (like, say, when southern California decides it would rather be a part of Mexico or its own nation).
Enriquez again, regarding our current income tax proclivities: "if we pay more and our children don't owe less, that's not taxes...it's just a long-term, high-interest loan".
Number of times ordained minister Martin Marty said "hell" during his presentation: 2. Number of times Marty said "goddamn": 1. Number of times uber-heathen Richard Dawkins said "hell", "goddamn", or any other blasphemous swear: 0.
Dawkins told the story of Kurt Wise, who took a scissors to the Bible and cut out every passage which was in discord with the theory of evolution, eventually ending up with a fragmented mess. Confronted with this crisis of faith and science, Wise renounced evolution and became a geologist who believes that the earth is only 6000 years old.
The story of Micah Garen's capture by Iraqi militants and Marie-Helene Carlton's efforts to get her boyfriend back home safely illustrates the power of the connected world. Marie-Helene and Micah's family used emails, mobile phones, and sat phones to reach out through their global social network, eventually reaching people in Iraq whom Micah's captors might listen to. A woman in the audience stood during the Q&A and related her story of her boyfriend being on a hijacked plane out of Athens in 1985 and how powerless she was to do anything in the age before mobiles, email, and sat phones. Today, Stanley Milgram might say, an Ayatollah is never more than 4 or 5 people away.
Lexicographer Erin McKean told us several interesting things about dictionaries, including that "lexicographer" can be found in even the smallest of dictionaries because, duh, look who's responsible for compiling the words in a dictionary. She called dictionaries the vodka of literature: a distillation of really meaty mixture of substances into something that odorless, tasteless, colorless, and yet very powerful. Here an interview with her and a video of a lecture she gave at Google.