Filter Bubble

The basic idea is this:

1. Your primary interface with the world is third-hand knowledge gathering.
   1. First-hand: you experienced it yourself. For example in school, doing lab experiments is important to gain first-hand experience of key scientific principles. This is the best, surest way to learn. Your experience is your own.
   2. Second-hand: knowledge is relayed from someone who experienced it first-hand. Think reading an autobiography. This is the second-best way. Your experience has been transferred by someone who experienced it themselves.
   3. Third-hand: your knowledge is relayed from a second-hand source. Think basically every opinion news show. There are some interviews, but they're soundbite quality. I stop the relay counts here, but this includes any n-hand sources above second hand.
2. You primarily interact with the world via a network of worldview-affirming sources.
   1. If you don't challenge your worldview, you can't learn to ask the right questions.
3. Every time you accept knowledge relayed by this network, you first stop using your critical thinking skills. Then you start accepting third-hand sources as first-hand sources.
   • The knowledge you received meshes with your existing first-person knowledge, so you are inclined to do a "fast review" of it, like a quick LGTM.
   • Eventually, you just auto-accept.
   • The problem is, Critical Thinking is a muscle, a fast decaying skill.

A filter bubble is functionally an Echo Chamber.