How can I write an argumentative essay against Nicholas Carr's "Is Google Making Us Stupid"?

"Is Google Making Us Stupid?" is an interesting article that isn't necessarily directed at Google. Rather, it is directed at the Internet and the general digital media that is so prevalent in today's society. Carr argues that Internet usage could have adverse effects on cognition. It might diminish people's capacity and ability for concentration and contemplation. He argues that the Internet offers too many distractions and small bits of information, and this never lets people slow down and really analyze and think about things.
In order to write an argumentative essay against Carr's article, you will need to come up with two main lines of argument. First, explain how Carr's logic is flawed. Second, explain how the Internet is actually making us smarter. This twofold attack works well because by showing how Carr's argument is flawed, it takes some of his credibility away. That will, in turn, open your reader up to your own arguments about how and why the Internet is making us smarter.
Structurally, I would start this paper with a question or a quote. A question works well to grab readers because it forces your reader to start thinking about potential answers. A quote would work well because you are already being forced to analyze Carr's article. You could use a quote from his article that you intend to blow apart. Be sure to end the opening paragraph with a clear thesis statement. Since I recommended a two-part attack on Carr's article, I also recommend a two-part thesis statement to help set up this kind of paper. For example:

Although Carr's article appears to discuss solid evidence against the Internet, his assumptions about it and human intelligence are incredibly skewed and shortsighted.

This thesis alerts your reader right away that Carr's article "appears" correct, but it isn't. The thesis also allows you to discuss his arguments as well as provide your own arguments for how Google is making us smarter.