Nicholas Carr, futurist and author of The Shallows: What the Internet Is Doing to Our Brains, has provided a tremendous amount of insight into how/why technology, and the Internet specifically, shapes both our behaviors and neurophysiology. According to Carr while the Web is unarguably a tremendous asset, it has also re-wired our neural pathways via neuro-plasticity. Due to the design of Web 2.0 the Internet has made us less contemplative, less empathetic, and more schizophrenic in our thinking. Carr's work serves as an excellent compliment to the writings of other Web 2.0 contrarians such as Jaron Lanier and Doug Rushkoff.
Post below is a brief interview with Carr conducted in late 2012: