In Search of Planetary Intelligence
We don’t have it on Earth. But maybe it’s somewhere out there.
It is said that Mahatma Gandhi, when asked about Western civilization, remarked, “I think it would be a good idea.” That’s how I feel about intelligent life on Earth, especially when I think about the question of what truly intelligent life might look like elsewhere in the universe.
What do we mean by intelligence? Like life, it’s hard to define, but we need to if we want to search for it. Among the radio astronomers of SETI—the Search for Extraterrestrial Intelligence—it’s only sort-of a joke that the true hallmark of intelligent life is the creation of radio astronomy.