We need to build change in to our systems and let these systems evolve as circumstances change. Change is inevitable, but we need to do a better job of dealing with it, because when we start building huge gleaming monoliths, I think we start getting into trouble.

When you write a high-tech thriller, and then people in the defense establishment start calling you - people I can't name - you feel you've hit a nerve.

I'm against unanswerable concentrations of power, whether that be government or private industry or religious figures - anybody who is not accountable to the larger social climate or society for the power they wield, that concerns me. I'm very pro-democracy.

I think if I were to express my wish, it would be that we are more regionally self-reliant. And I don't mean people being survivalists, I mean regionally self-reliant. So that you have these individual cells. The idea of having different solutions in different areas, so that we have a very robust, durable civilization.

The reality is, when I'm sitting in a hotel room at 3 in the morning, and I see something on the Internet that interests me in the form of a band I want to hear, I like the ability to just go online to iTunes and download it immediately.

We have many accommodation owners - people who own small hotels, villas and bungalows - and the digital economy has opened up a world of possibility for these business owners. Now, they can sell to and communicate with people around the world, and where Booking.com comes in is to help these accommodation owners adapt to the digital world.

The Oklahoma City bombing was simple technology, horribly used. The problem is not technology. The problem is the person or persons using it.

Blockchain's a very interesting technology that will have some very profound applications for society over the years to come.