Final answer:
The metaphor of hope as a bird in Dickinson's poem is effective because it conveys the qualities of persistence, upliftment, and resilience that are associated with hope.
Step-by-step explanation:
The comparison of hope to a bird in Emily Dickinson's poem "Hope is the Thing with Feathers" is often deemed effective because of the metaphorical implications that resonate with many readers. Comparing hope to a bird suggests it has a persistent and uplifting presence within the soul, just like a bird's continuous song. Moreover, the bird metaphor implies freedom and the ability to rise above challenges, much like how hope can make us feel lighter and more resilient in the face of adversity.