I've long thought that the trouble with the internet in general is that we humans have evolved to cope with maintaining a social network of at most a few dozen people, and all of a sudden we're trying to handle having all nearly 7 billion of us dumped into our heads at once; part of what the wall you speak of is about is separating out who we need to deal with in immediate terms, and we're not very good (yet?) at sorting out the signals coming in when so many more people appear to be on the inside of that wall. It will be... interesting to see how the generations growing up digital reach their accommodation to this issue, because I suspect that anyone who even vaguely remembers the Before Times is going to be facing one hell of a gap between their perceptions of the world. ("Mommy, you mean before the internet you had to use your legs to go to talk to people...?") Oh, the approaching Singularity sometimes makes me kinda glad I haven't got round to having kids... {sigh}