In what key way does the function of the discourse marker '게다가' differ from '더욱이' when structuring a persuasive argument?
The key difference lies in the scope and nature of the added information within the persuasive argument. '게다가' introduces an additional point or piece of information that is *relativelyindependent of the previous statement. It acts as a simple additive, building upon the initial claim with a new, supplementary fact or reason. It's like adding another item to a list. For example, '그는 똑똑해요. 게다가 성실해요' (He is smart. Moreover, he is diligent). '더욱이', on the other hand, introduces information that *directlyenhancesor reinforces the preceding statement, providing further detail, explanation, or evidence that strengthens the initial point. It serves to amplify or emphasize what was already stated. It's like providing more evidence to support a claim. For instance, '그 영화는 재미있어요. 더욱이 배우들의 연기가 훌륭해요' (That movie is interesting. Furthermore, the actors' performances are excellent). Here, the actors' performances directly contribute to why the movie is interesting. Therefore, '게다가' adds a new, separate point, while '더욱이' reinforces and strengthens the preceding point with additional supporting information.