Transcript: Even if we accept the premise of SETI, that intelligent civilizations exist, and we accept the methodology of using radio waves to communicate across large distances of space and time, we are still left with a profound question. What should we say, and how should we say it? The idea of communication involves the idea of a message, but how do we encapsulate human intelligence and civilization in a message that can be coded and transmitted across regions of space? The danger, obviously, is anthropocentric thinking, couching our message too much in terms of human specific intelligence and culture. The specificity of culture and language should not be exaggerated. Remember that we share the planet with great apes like gorillas with whom we share ninety-nine percent of our DNA, yet we cannot communicate with them. We also have orcas and dolphins which may be intelligent, but we can communicate with them. So imagine now how difficult it might be to communicate with aliens of utterly different function and form.