On the most rudimentary level there is simply terror of feeling like an immigrant in a place where your children are natives - where you're always going to be behind the 8-ball because they can develop the technology faster than you can learn it. It's what I call the learning curve of Sisyphus. And the only people who are going to be comfortable with that are people who don't mind confusion and ambiguity. I look at confusing circumstances as an opportunity - but not everybody feels that way. That's not the standard neurotic response. We've got a culture that's based on the ability of people to control everything. Once you start to embrace confusion as a way of life, concomitant with that is the assumption that you really don't control anything. At best it's a matter of surfing the whitewater.
Word to John Perry Barlow.