This comparison reveals that just as a prisoner cannot escape his or her entrapment, misery and anguish at being incarcerated, likewise, the old folks who have these old frail bodies cannot freely leave their pain, misery and hurt that their bodies have caused them. Their plight causes their misery to be showcased to the reader, but, ironically, not to the youth in the poem who visit them, as they seem oblivious to the old folks' pain and suffering.