I'm undecided about this. To what extent is the echo chamber and groupthink forming process of self-choosing internet information, and particularly Facebook dynamics, a factor in creating a fragmented, entrenched and tribalised political-thought landscape. is it a problem? Maybe overall its good that people are engaging with political ideas more (are they?), and this is a natural part of that? And if it is a problem, what's the solution? And is there any way that the internet itself (or the way we use it) can help solve the problem? I had a bit of a wake up call to this recently when i saw a couple of different Facebook friends post on what i thought were complex, nuanced questions. They often take a very strong position, and what follows in likes and comments is endless backing up and reaffirming of what the OP had said. In the recent past these strong opinions would generate argument but now those who disagree have either unfriended or given up contesting, whilst those who agree pile on support and reinforcement. Feels cultish to me.