Kerr offers a favorable appraisal of Pinter's play in this review, citing the play as a challenging work of theatre.

I was instantly fearful that The Caretaker would become popular for the wrong reasons. There was the chance, for instance, that it would be regarded as zany comedy, and forcibly laughed at. One response that is regularly made to contemporary plays of the profoundest despair is the tittering pretense that the author has carved his vast zero as a joke. This is not emptiness, the nervous laughter says, but an irresponsible playfulness. People are always mentioning the Marx brothers in connection with the "comedy " of carefully illustrated nothingness, as though we had once laughed at the Marx brothers because they struck us as irrational in the clinical sense.

Thus laughter was felt to be obligatory as three remarkable actors played out the following sequence in Harold Pinter's...