How do we recognize an alien intelligence ?

Most people think of an intelligent extraterrestrial as primarily human-like, a bipedal entity with two arms, two legs and a face not dissimilar to our own.”The goal of COMPLEX would be to prepare ourselves for assessing other species if we locate life in space,” said author Denise Herzing. “Just as a chimpanzee cant understand quantum theory, it could be there as aspects of reality that are beyond the capacity of our brains.”. The reality however is that our limited knowledge of how life can fabricate elsewhere in the universe may be blinding us to possible forms of intelligent life that are completely unlike