Step-by-step explanation:
In line 23 of the poem, the speaker uses different names to identify the man, calling him "the man," "Oscar Jartín," and "abuelo." This use of different names contributes to the meaning of the poem by highlighting the different roles and identities that people can have in their lives. The man is not just a stranger or a passerby, he is someone with a name and a history. The use of "Oscar Jartín" and "abuelo" also suggest that the man has a familial connection to the speaker, which adds to the emotional weight of the poem. Additionally, the use of different names shows how the speaker's perception of the man changes over time, from a stranger to a family member. Therefore, the use of different names contributes to the overall meaning of the poem by emphasizing the complexity and depth of human relationships and identities.