I can tell any liberal why he or she thinks what they think. I can predict to them what their reaction to any event or person is going to be, because I know them, because I have taken the time because I'm curious to study it. I know what liberalism is. I know from where it springs and derives, and I know the vast majority of people who are liberals, what they are going to do, say, and think about.
Ernst Mayr
The issue, as correctly emphasized by Carl Sagan, is the probability of the evolution of high intelligence and an electronic civilization on an inhabited world. Once we have life (and almost surely it will be very different from life on Earth), what is the probability of its developing a lineage with high intelligence? On Earth, among millions of lineages of organisms and perhaps 50 billion speciation events, only one led to high intelligence; this makes me believe in its utter improbability.
