The concept of the 'echo chamber' in social media research describes a situation where users are exposed only to information that reinforces their existing beliefs. While many scholars argue that algorithmic filtering is the primary cause of these chambers, recent studies suggest that user choice plays an even more significant role. Individuals tend to follow others who share their political leanings and proactively block or unfollow those who express dissenting views. This self-selected isolation creates a feedback loop that polarizes public discourse and diminishes the capacity for democratic deliberation. Some critics suggest that regulating algorithms will solve the problem, but this approach fails to account for the human psychological tendency toward homophily, or the preference for similar others. If users are given unfiltered feeds, they often still seek out and engage primarily with agreeable content. Therefore, addressing polarization requires not just technological fixes but educational interventions that encourage cognitive flexibility and the valuing of diverse perspectives. Without such efforts, the digital public square will likely remain fragmented, regardless of changes to platform architecture.