The False Vacuum, Great Filter, Brain in a Vat, Higher Dimensional Beings, and Fermi Paradox just might be the scariest theories known to man. Our favorite? The Fermi Paradox, which is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilizations, such as in the Drake equation, and the lack of evidence for such civilizations. According to this line of thinking, the Earth should already have been visited by extraterrestrial aliens though Fermi saw no convincing evidence of this, nor any signs of alien intelligence anywhere in the observable universe, leading him to ask, “Where is everybody?” Now the burning question today would be, “what if humans just can’t see them?” Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one of a cool gift wrapping hack from Japan.