What we were also trying to do is vary the tone slightly across the season of Black Mirror, because there are six stories this time around, so you don't want it to just be the devastating, bleak-em-up.

Don't accuse anyone with the temerity to question your sad supernatural fantasies of having a 'closed mind' or being 'blind to possibilities'. A closed mind asks no questions, unthinkingly accepting that which it wants to believe. The blindness is all yours.

While I was thinking about that, the military, I read a book called On Killing, about the obstacles people have to pulling the trigger in combat. So sometimes you just absorb all this stuff without realizing you were doing research.

The difference between smartphones and cigarettes is this: a cigarette robs 10 minutes from your lifespan, but at least has the decency to wait and withdraw all that time in bulk as you near the end of your life - whereas a smartphone steals your time in the present moment, by degrees. Five minutes here. Five minutes there. Then you look up and you're 85 years old.

Our four-year-old, like a lot of kids, you introduce him to an iPad and he quite quickly gets drawn in in a way that you're like, "Wow, I've got to stage an intervention here." He picked up on gaming terminology really quickly. If you say, "Keep practicing holding a pencil and see if you can draw a letter, the alphabet," he understands that if you do that you've unlocked Level Two.

I think people are starting to look away and questioning, and they're sort of horrified.

In a weird way, when everyone's feeling that the world's going to hell in a hand basket, I kind of relax a little more because I often feel like that.