I did an album a long time ago called 'Replicas ' which was entirely science-fiction driven or science-fantasy. Since then it's been a song here a song there. It's not really a constant theme. I've written far more about my problems with religion with God and all that.
People repeat behaviour that leads to flooding their brains with pleasurable chemicals. The short-term reward loop acts over hours to years and the long-term reproductive success loop over generations.
