Whereas Vladimir and Estragon have each other to share the \'waiting\' Linus is alone...after Sally leaves him it becomes clear that there is no \'treat\' and this has all been a \'trick\' - one could cogently argue that \'The Great Pumpkin\' is (in actuality) a manifestation of the Buddhist concept of illusions about the true nature of existence. Linus adamantly adheres to his delusive inclinations; thus illusions innumerable as particles of sand on a beach prevent Linus from understanding that The Great Pumpkin was always within.