Then there’s a carefully articulated religious faith that believes we’re the lost descendants of the Martians, waiting to be reunited with the spirits of our ancestors when we’ve attained sufficient karmic enlightenment. A few scientists entertain vaguely hopeful theories that say Mars was in fact only a remote outpost, a colony cut off from the mother culture, and that the hub of the civilisation is still out there somewhere. My own personal favourite is that the Martians moved to Earth and became dolphins in order to shrug off the strictures of technological civilisation.