Psychologist Dr Albert Harrison of the University of California has suggested that given our widespread acceptance of technology, we are now in a much better position to accept an alien visitation without succumbing to blind unreasoning panic. That's an interesting observation but surely fatally flawed. It doesn't matter how smart our phones are, we're clearly morbidly fascinated with the idea of alien invasion. The longevity of the genre is proof of that, with several big budget alien invasion movies recently released or on their way, it's clear that fear of invasion is becoming a predominant concern for many people. It doesn't have to be aliens in this age of terrorism, but put a mile wide mothership over New York for real, and I can't see the citizens below taking it in their stride.