An echo chamber is an insular communication space which is free of serious debate. Participants within that space repeat the same opinions. No one calls anyone else out, and criticism is frowned upon.
With an “echo chamber,” certain ideas, beliefs or data points are reinforced through repetition. The system is closed and does not allow for the free movement of alternative or competing ideas or concepts.
In this situation, certain ideas or outcomes can win out because of an inherent unfairness in how input is gathered.
Often groupthink and tunnel vision are contributing factors. Participants may find their opinions constantly echoed back to them, which reinforces their individual belief systems. Individuals who participate in echo chambers often do so because they feel more confident that their opinions will be more readily accepted by others in the echo chamber.
It is important to distinguish the difference between echo chambers and filter bubbles. Both concepts relate to the ways individuals are exposed to content devoid of clashing opinions, and colloquially might be used interchangeably.
However, echo chamber refers to the overall phenomenon by which individuals are exposed only to information from like-minded individuals, while filter bubbles are a result of algorithms that choose content based on previous online behavior, as with search histories or online shopping activity.
Although echo chambers can be unhelpful in limiting thought and perspective, echo chambers also can have a very powerful impact on enabling human thinking in new areas.
Consider these historical examples;
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