I am fascinated by the idea of our brains physically changing in result of new technology, as discussed in Chapter Three of The Shallows: What the Internet is Doing to Our Brains. While the concept of evolution over generations (and centuries) makes sense, we are still living in the dawn of the technology age, and already physical changes to our brains can be observed.
Author Nicholas Carr tends to lean toward a cautionary viewpoint in terms the measurable effects that technology has on our brains (he even states that he misses his old one at the conclusion of Chapter 1). Social media plays a significant role in the re-circuiting of our brains, as seen in the ASAP Science video, 5 Crazy Ways Social Media Is Changing Your Brain Right Now:
While I have certainly experienced all of the examples used in the video, the one that struck me as intriguing is that relationships initiated online through social media tend to be more successful. Sure, there could be an argument made to refute this research, but it seems logical that it would be accurate given the myriad ways that people can present themselves online.