In the play 'Waiting for Godot' by Samuel Beckett, stage directions often contain subtle clues regarding the characters' states of mind and their interactions with the environment. For instance, consider a scene where the characters are waiting by a tree. The directions might indicate, 'The tree is bare, but a few leaves are present. Vladimir sits, restless, while Estragon paces nervously.'
Based on this scene, which of the following options best interprets the implications of the stage directions regarding Vladimir's and Estragon's psychological states?