Jˇhannsson failed because the movie forgot to take into account that DONALD J. TRUMP would be the President of the United States. With TRUMP as the great world leader, all the aliens would have to do is read his Twitter feed to realize that they need a different savior than the human race. That's because TRUMP will cause our extinction via NUCLEAR WAR in the next two years! Jˇhannsson should have used the processed sounds of choking, dying human voices for TRUMP's Earth!!