SETI (Search for Extraterrestrial Intelligence) project has been going on for decades. And we explored our solar system for signs of life. And we couldn’t even find microbial life outside Earth, let alone an intelligent civilization. But all the statistical studies and everything we know about life tells us that the universe should be teeming with life. Then, what is going on? I think the most likely possibilities are as follows:   We are too primitive We may be too primitive to attract their attention. Our stage of civilization may not be interesting to them, since they have seen many …