The paralysis that we have right now when we think about migration is partly because we can't imagine what the world would look like in the future. So I think it's important for writers and artists to try to imagine that.

I think that we live in a world - and this is something which living in Pakistan, perhaps, has taught me - and, you know, we live in a world where there is a constant feed from social media, the news, etc., of things that can scare us. And we become so anxious because human beings are meant - are designed to be sensitized to dangerous stuff.

We can open up our computers and Skype with someone, and we see them. It's like looking through a window. And we can surf the internet through our phones, and it's like our consciousness is far away. Or we can step through a airplane door and be in another continent a few hours away. So technology feels, to me, like the doors sort of already exist, at least emotionally.

Contemporary culture in Pakistan, just like in America, is continuously hitting us with scary stuff. And so we are utterly anxious. I think that it's very important to resist that anxiety, to think of ways of resisting the constant inflow of negative feelings, not to become depoliticized as a result but to actually work actively to bring into being an optimistic future.

Walking is very good for writers. There's something fundamentally useful about not talking to anybody, not looking at a screen, and being in nature - even if that nature is an urban environment.

I think wars, climate change, all that stuff is going to move people. And so I wanted to say, "What if the migration apocalypse occurs and it isn't an apocalypse at all?" Maybe we will still find ways to be happy and for our children and grandchildren to thrive and the world to move on.

I think walking is very useful, like sleeping and dreaming, as something that's important to my ability to write.