As Carl Sagan famously argued, we also can't rule out invisible dragons hiding in our garages. By far the most distinguishing feature of space aliens on & near

As Carl Sagan famously argued, we also can't rule out invisible dragons hiding in our garages. By far the most distinguishing feature of space aliens on & near the earth is the widespread human zeal to believe in them. Amazingly similar to the age-old human zeal to believe in ghosts, angels, faeries, elves, flying horses, talking animals, gods, etc.