Throughout his article Carr establishes his credibility by including data and examples to explain the negative effects of relying too much on technology. He opens up with a story about a deadly airplane crash, which was ultimately caused by technology. Carr then explains how "human pilot holds the controls for a grand total of just three minutes." Because most pilots are operating under autopilot, when it turns off and goes to manual operation unexpectedly, the pilots don't properly respond to the situation, most of the time causing the plane to crash. Carr then gives another example of the same situation, making readers think, Maybe relying too much on technology is a risk, yet a deadly risk at times.
In addition to examples he also quotes many psychologists such as Lisanne Bainbridge; “and a person’s skills ‘deteriorate when they are not used’ even experienced operators...” This quote does not only explain why we must not rely on technology to a point where we lose our skills, but it also establishes credibility for Carr; showing he knows what he is talking about.
Carr also uses negative diction throughout his article which hints at how too much technology can be bad. He uses words such as “unreliable”, “insufficient”, “risk”, “sacrificing” and many other words that convey a negative tone. This helps Carr achieve his purpose because it makes readers lean more toward the negative effects of technology. Carr does achieve his purpose of explaining to people that relying on technology too much can be a risk by using rhetorical devices such as examples and quotes, and negative diction.
Source:http://www.theatlantic.com/magazine/archive/2013/11/the-great-forgetting/309516/