Final answer:
Oscar Wilde uses the play on the word 'Ernest' in his play for comedic effect and to delve into themes of identity and societal superficiality, highlighting the satirical critique of Victorian society.
Step-by-step explanation:
Oscar Wilde ingeniously employs a play on words for comedic effect and to explore deeper themes in The Importance of Being Earnest. The use of the name Ernest by two male characters serves a dual purpose in the play. Firstly, it provides comedic effect as the characters engage in deception and the resulting confusion entertains the audience. Secondly, and more importantly, it allows Wilde to delve into themes of identity and the superficiality of societal values. The significance of the true Ernest not knowing his real name signifies the arbitrary nature of identity within the social context of the play. The audience witnesses as characters adopt different personas to align with societal expectations, emphasizing Wilde's satirical take on Victorian society.