The idea that we may have been influenced by a superior intelligence in our distant past is a very valid and very profound one, and it's certainly not beyond the bounds of possibility to assume that something strange has happened to the people on this planet. About 15,000 years ago, it seems that there was a sudden burst of knowledge and creative activity that, after millions and millions of years, accelerated the pace of evolution and pitched human-kind into being the dominant species on this planet. Now, archaeologists may give you all sorts of explanations as to how this came about, but any other reason is just as valid. You could say that the human gene-bank was, in some way, seeded with knowledge by visitors from outer space, totally transforming the thinking on this planet.
Less than 100 years ago, the Wright brothers were flying something with a bit of string. Now we're flying to the moon. That development has taken place in only 100 years. If you take that pace of development, or if you take how fast that development can happen, you can see that something quite remarkable did happen in that very short time all those years ago, in terms of human understanding, social organisation, technology and all the rest of it.
The other element in "Testament of Arkadia" was the Adam and Eve story, which is a very primal type of story in our consciousness. It's difficult to say whether it's purely biblical, some form of inspiration, or whether it maybe matches up to some sort of racial memory that we have of a time when we all did live in some kind of land of plenty, a veritable Eden. There's a symbolism in the Adam and Eve story which is good for all time and, I think, whether you're religious or not, it has a kind of sense to it...a philosophical sense.
All of these things were at the back of my mind when I came to write this story. David was very keen on doing it, although I was less keen at the time for all sorts of reasons. It seemed to me to be too "on the nose": making a very direct form of statement about who we were, and the way in which the story was being driven to the point where we were imposing a very definite form of religious context into it. Now, although I'm not a practising Catholic, I am an Irish Catholic, which is like saying that I have Catholicism "genetically coded" in my system. I was a very devout Catholic growing up, as most people of my generation were, and that spiritual exercise is what develops your spirituality. Even if you practice Catholicism or not, that expanded presence inside you is there and it finds an outlet in all sorts of other different ways: in humanism, in philosophy, in understanding, and in a speculative consciousness...that is, the capability to not dismiss things because they're not provable. The most important thing is to accept that there are mysteries to life and that if things are not provable, it doesn't necessarily mean that they don't exist. This, to me, is a fundamental part of my development as a writer: that I don't need to prove things to know that they are real.