Robert Redford at the 69th edition of the Venice Film Festival in Venice, Italy. “He opened a door on ‘the possible’ for so many young talented artists,” John Cooper, who once headed the Sundance Film Festival, told us this week. “And they went on to show others the possibilities in themselves.”Robert Redford was, well, Robert Redford: handsome, famous and charismatic. John Cooper described how much Redford enjoyed working over ideas with young filmmakers at the Sundance Institute each summer. “I think that recharged his creative batteries.”For decades, Robert Redford helped talented artists follow his Sundance leap into the rocky rapids of filmmaking.