US Congress' hearing on UFOs has not made anything clear to the public on whether there exists any program on governmental reverse-engineering of the external materials that are related to the phenomena. If something positive should have become obvious, the origin of human would be discussed from a point of view that is very much different from before. Anyway, our area of study, AI and mathematics, is based on a system that is based on what human has made artificially so that we don't care much of the on-going discussion on the topic.