Can you ever “solve” poverty? Can you ever “solve” crime? Can you ever “solve” disease, unemployment, war, or any other societal herpes? Hell no.

We live in such a service-based, globalised economy where very few people actually make anything and the people who do make stuff... it's all part of a massive global supply chain. So what if all those chains were suddenly cut, how would you make something? How would you keep people alive? And that was something I wanted to explore.

I think 'G.I. Joe' is a perfect example of how I'm the world's worst businessman. If I were smart, I'd be writing 'World War Z Part 12', but I have to go where the muse leads, and I've always been a huge 'G.I. Joe' fan. I always wanted to know more about these characters, these little plastic figures I played with as a kid.

Since 2001, people have been scared. There's been some really scary stuff that's been happening - 9/11, Iraq, Afghanistan, Katrina, anthrax letters, D.C. sniper, global warming, global financial meltdown, bird flu, swine flu, SARS. I think people really feel like the system's breaking down.

The highest distinction is service to others.

If I thought there was any hope of turning 'World War Z' into a movie, I wouldn't have written it as a giant, epic, global story, because that requires a giant, epic, global budget.

There's a word for that kind of lie. Hope.