Now that we've spent some time learning about the physical stuff that makes our digital culture possible, this week we'll look more directly at that digital cultural landspace and specifically the ways in which digital platforms tend to steer us toward further division as a culture. However you feel about the outcome of the 2016 presidential election and the ongoing scandals, tensions, protests, investigations, you probably will agree that our nation is pretty divided right now. One reason for that is the way that news shared through social media steers us toward information that simply confirms our beliefs. You can see this illustrated starkly in the Wall Street Journal's "Blue Feed / Red Feed" simulator.