Let’s start with a question. A few questions, actually: When did it become normal for your average 35-year-old New Yorker to (a) walk around with an iPod plugged into his ears at all times, listening to the latest from Bloc Party; (b) regularly buy his clothes at Urban Outfitters; (c) take her toddler to a Mommy’s Happy Hour at a Brooklyn bar; (d) stay out till 4 A.M. because he just can’t miss the latest New Pornographers show, because who knows when Neko Case will decide to stop touring with them, and everyone knows she’s the heart of the band; (e) spend \$250 on a pair of jeans that are artfully shredded to look like they just fell through a wheat thresher and are designed, eventually, to artfully fall totally apart; (f) decide that Sufjan Stevens is the perfect music to play for her 2-year-old, because, let’s face it, 2-year-olds have lousy taste in music, and we will not listen to the Wiggles in this house; (g) wear sneakers as a fashion statement; (h) wear the same vintage New Balance sneakers that he wore on his first day of school in the seventh grade as a fashion statement; (i) wear said sneakers to the office; (j) quit the office job because-you know what?-screw the office and screw jockeying for that promotion to VP, because isn’t promotion just another word for “slavery”?; (k) and besides, now that she’s a freelancer, working on her own projects, on her own terms, it’s that much easier to kick off in the middle of the week for a quick snowboarding trip to Sugarbush, because she’s got to have some balance, right? And she can write it off, too, because who knows? She might bump into Spike Jonze on the slopes; (l) wear a Misfits T-shirt; (m) make his 2-year-old wear a Misfits T-shirt; (n) never shave; (o) take pride in never shaving; (p) take pride in never shaving while spending $200 on a bedhead haircut and $600 on a messenger bag, because, seriously, only his grandfather or some frat-boy Wall Street flunky still carries a briefcase; or (q) all of the above?

Amortals live among us. In their teens and 20s, they may seem preternaturally experienced. In later life, they often look young and dress younger. They have kids early or late — sometimes very late — or not at all. Their emotional lives are as chaotic as their financial planning. The defining characteristic of amortality is to live in the same way, at the same pitch, doing and consuming much the same things, from late teens right up until death. Cowell is one of their poster boys; so too is France’s Nicolas Sarkozy, as mercurial as a hormonal teenager. Madonna is relentlessly amortal. It’s easier to diagnose the condition in the middle-aged, but there are baby amortals — think Mark Zuckerberg, the world’s youngest self-made billionaire, who looks set to comport himself like a student geek to the end of his days. The eldest amortals, born long before the first boomer wave, are still making mischief around the world.

Social media allow for instant discussion: Within a few minutes Jaipreet, Nathaniel, David and I were engaged in a conversation about a neglected topic (the representation of smell) in the history of STM and STM museums.

Social media increase the chances of contacts between researchers and curators considerably: The four of us have never met before, and chances are low we would have had this discussion in a coffee break between conference sessions.

You don’t need to travel to meet: You can discuss at length with many people without any travel costs and minimal carbon footprint.

It’s informal: You can have a beer or take a bath while discussing serious matters.

Twitter breaks down hierarchies: It doesn’t matter who’s a senior professor and who’s a PhD candidate –the best argument creates responses, generates discussion, and increases the number of followers. It also makes turn-taking easier, and breaks down the all too common male domination in seminar discussions.

Social media nivellate cultural and linguistic barriers: It doesn’t matter if you speak with a strong accent or master the intricacies of English grammar.

Twitter isn’t built for bullshit: The 140 character limit forces you to sharpen and focus your argument.

To get beyond the edges you have to go deep, very much like danah boyd has done with her work. The work danah has done is deeply helpful as it surfaces the difference in understanding across personality types, age ranges, and many cultural influences. She deeply understood the problem that most people on line (youth and adults) were not openly social as was (and sadly still is) the common assumptions of things to come. Privacy and small groups is much more common. Today we see Facebook privacy setting with 70% or more with “Friends Only” or tighter for sharing information ([Pew’s Privacy management on social media sites” report).