You have to think back to the '90s. The computer was this terrible-looking thing that was trying to compete with the television. And it was this idea of email and chat rooms and this kind of stuff that first people - got people there.

The Internet, you know, 10 or 15 years ago sort of felt like the wild West. You could go out there and do anything and search for things, and, you know, find out about stuff. Now always in the back of my mind, you know, whether it's email or whatever else, it's like, well, is this going to show up somewhere? Is someone going to keep track of this and, you know, know I was searching for - maybe it's an embarrassing disease, maybe it's a weird hobby?

History shows a typical progression of information technologies: from somebody's hobby to somebody's industry; from jury-rigged contraption to slick production marvel; from a freely accessible channel to one strictly controlled by a single corporation or cartel-from open to closed system.

Hitler had this understanding that you speak to people's deepest, darkest emotions and give them voice that can be incredibly effective.

When you think about normal advertising, it's just like, hey, here's a car and, you know, we don't know if you're looking for a car or not. So Google promised that mental state, and then were able to prove that delivering the message at the exact right moment would make someone click on something. So they pioneered the idea that advertising could be profitable on the internet, that a specific, very micromental state could be targeted. And they established the primacy of the click, which has haunted us ever since.

Every time you click on a like button on another site, you've told Facebook that you're doing that. And so therefore advertisers know who their fan base is.

You know, it's so funny that the internet's become a series of traps where you do sort of innocent things like give your name or address or indicate a preference, I like this thing, and then therefore you open yourself up to a deluge of advertising based on those stated preferences.