Nicholas Carr said this quote

[Patricia Greenfield] concluded that “every medium develops some cognitive skills at the expense of others.” Our growing use of the Net and other screen-based technologies has led to the “widespread and sophisticated development of visual-spatial skills.” We can, for example, rotate objects in our minds better than we used to be able to. But our “new strengths in visual-spatial intelligence” go hand in hand with a weakening of our capacities for the kind of “deep processing” that underpins “mindful knowledge acquisition, inductive analysis, critical thinking, imagination, and reflection.

~ Nicholas Carr

Some of the test subjects were given cards that had both words printed in full, like this:Hot: ColdOthers used cards that showed only the first letter of the second word, like this:Hot: CThe people who used the cards with the missing letters performed much better in a subsequent test measuring how well they remembered the word pairs. Simply forcing their minds to fill in a blank, to act rather than observe, led to stronger retention of information.

~ Nicholas Carr

We become, neurologically, what we think.(33)

~ Nicholas Carr

Their words also make it a lot easier for people to justify that shift -- to convince themselves that surfing the Web is a suitable, even superior, substitute for deep reading and other forms of calm and attentive thought. In arguing that books are archaic and dispensable, Federman and Shirky provide the intellectual cover that allows thoughtful people to slip comfortably in the permanent state of distractedness that defines the online life.

~ Nicholas Carr