Archive: https://archive.today/hbI5L From the post: >>Joe Biden was seen mumbling to himself after being directed across the stage at the opening of Barack Obama's presidential library. The former president, 83, seemed bewildered at various points during the event in Chicago on Thursday. Video showed him staring straight dead ahead into the crowd as Obama strolled past. He then lingered near the podium after much of the ceremony had ended, with cameras capturing him waving to the crowd, scanning the audience and remaining on stage after Obama and other dignitaries had moved away.