What is an echo chamber?
An echo chamber is when you control several sources of information and use those sources of information to spread news and ruors that suit your political and business agenda.
1. Here is the perfect example that shows an echo chamber being used for political goals:
The train of planting News in the above echo chamber goes as follows - First story in the Wall Street Journal, Second Story in ...the NY Post and finally, news story on Fox News - Seems like different news sources commenting on a story but in reality it's ONE news story, created and promoted by the SAME news source.
2. Here is another example of a political echo chamber using multiple people for ONE view and on ONE channel. (And proof of demonization of the 'left' by this 'conservative' echo chamber):
Above: 'Conservative' Echo Chamber through Murdoch's Network (using multiple books on one view, talking about one perspective ONLY on a network owned by one man, i.e. the new republican party is an invention using multiple media channels all owned by the same group. Ironically, or perhaps, intelligently, the 'left' (i.e. the networks NOT owned by Murdoch) are grouped together as having a separate agenda thereby creating the 'Us vs. them' dynamic.
3. Here is an example of using an echo chamber for JUST business reasons (i.e. Rupert Murdoch comes up with device and tries to sell it through his news channels)
4. Here is an echo chamber using a different method (i.e. controlling sources of 'expert opinion' as opposed to the actual companies presenting the news). This is presented by Senator Bernie Sanders.
All of the above are examples of "echo chambers" - i.e. sources of information controlled by a few who use these sources to promote thier ideas over and over again while making them seem to be from independant (and therefore reliable) sources.