Why does the following not belong in a summary of the story ?

[he] let his gaze wander to the swirling water of the stream racing madly beneath his feet. a piece of dancing driftwood caught his attention and his eyes followed it down the current. how slowly it appeared to move! what a sluggish stream! what contrasting words are used to describe the stream in this passage?

Write about a scientist and present information including a short biography, contribution,their scientific achievements and contribution to science

What’s the answer. i need the answer fast