If you have a weakness for furry slippers or something, you might end up with that kind of advertising. It's a very complicated algorithmic decision. There's no one dude who's deciding what ads are going with things, and it's very individualized also. And that's the idea of collecting information is that in theory, you're showing people things that they should want to see or for which they are a good target. So, no, there's no master person.

If you have a disease and suddenly start getting ads for cures for that disease and it's an embarrassing disease - all that kind of stuff it just gets into that zone of autonomy or privacy where you feel a sense of freedom to be who you want to be.

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?

There's always going to be a tradeoff between trolling and anonymity, and I guess that's the way life will be. And you can manage it, but you can't cure it.

Let's say you're someone's phone, and you notice that your owner is drinking coffee at certain times of the day, just very subtly indicating where the local coffee shop is which happens to have paid, you know, whoever makes your phone at the right moment. I think we're in a future where frankly we are possibly facing little tiny bits of manipulation in all of our waking hours, if we don't have that already.

Facebook, when it began, like Google, was very resistant to advertising. They knew, like all - Mark Zuckerberg, like all good engineers, knew that advertising makes the product worse. But, you know, over time, they've been forced to increase the advertising load more and more and more. And the way they advertise is they - it's subtle but they know everything, you know, about everybody on the site.

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.