Vivian Mercier described Waiting for Godot as a play which "has achieved a theoretical impossibility—a play in which nothing happens, that yet keeps audiences glued to their seats. What's more, since the second act is a subtly different reprise of the first, he has written a play in which nothing happens, twice.".  Mercier once questioned Beckett on the language used by the pair: "It seemed to me...he made Didi and Gogo sound as if they had earned PhDs. 'How do you know they hadn't?' was his reply."  They clearly have known better times, a visit to the Eiffel Tower and grape-harvesting by the Rhône ; it is about all either has to say about their pasts, save for Estragon's claim to have been a poet, an explanation Estragon provides to Vladimir for his destitution. In the first stage production, which Beckett oversaw, both are "more shabby-genteel than ragged...Vladimir at least is capable of being scandalised...on a matter of etiquette when Estragon begs for chicken bones or money." 
Though it seems as if nothing happens in the play, actions actually play a very important role in Waiting for Godot. The stage directions of the play constitute nearly half of the text, suggesting that the actions, expressions, and emotions of the actors are as important as the dialogue. Examine the significance of the stage directions of one particular scene; for example, why is Estragon always struggling with his boot? What is the significance of Pozzo's vaporizer spray? What is the point of the scene in which Vladimir and Estragon exchange hats eight times?