The breakup of Bell laid the foundation for every important communications revolution since the 1980s onward. There was no way of knowing that thirty years on we would have an Internet, handheld computers, and social networking, but it is hard to imagine their coming when they did, had the company that bured the answering machine remained intact.

In fact, the big steps forward for advertising, especially after World War I were when government just began employing the tools of advertising for its own purposes to get people to join the army and other things.

We have just decided we have to have everything for free. And I think we're starting to pay for it in terms of our mental states.

I am the most concerned that we end up in a situation where your - everything is known about you and so therefore, not only Google, but Google, Facebook, Twitter - the whole set of companies - essentially knows all your weaknesses and therefore how to manipulate you in subtle ways in order to have you do things you might not otherwise do.

When you pay for stuff, it has more of your interests in heart.

Google has you at a very specific mental state that is, looking for something. And what they've always been able to say is, we deliver your message at the exact time someone is, say, looking for fishing hooks or looking for marriage counseling or looking for a lawyer for a particular problem. And here we have our customers telling you what is in their heart and soul. It's something that, you know, advertisers have wanted for decades.

Advertising just keeps getting heavier and heavier and heavier. It doesn't have any natural limit, and we haven't found the place for the limit. And I think it's really important, therefore, that some of the revolts that are undergoing right now, you know, whether it's ad blockers or other things, are people trying to set some lines so that we say, you know, this far but no further. And this is where it ends.