What two ideas does macy synthesize to create a new understanding in this excerpt

Screen addiction among teens: is there such a thing?

[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?

What reasons does the author give to support the claim that it is difficult for a message to move people to take action?