Final answer:
The theme of 'Sameness' in 'The Giver' is introduced in Chapter 1, which describes the uniform and structured society that the protagonist lives in.
Step-by-step explanation:
The discussion about everyone being the same in The Giver revolves around the concept of 'Sameness,' a form of societal conformity and uniformity. This theme is explored throughout the novel. However, the early chapters introduce the community's emphasis on 'Sameness' as a way to prevent discord and maintain order. Specifically, Chapter 1 gives an initial glimpse into the idea when it describes the rules and structured society in which the protagonist, Jonas, lives. As the novel progresses, the implications of 'Sameness' and the absence of true individuality and emotion become more apparent, with more detailed discussions in subsequent chapters as Jonas receives memories that contrast with his society's enforced uniformity.