[imtringued]

When you "consume" a new piece of information you have are three options: verify it yourself, believe without proof or dismiss it without proof.

The problem is that some claims are hard to verify so you immediately have to believe or dismiss the claim without proof. However, when you receive new information it is possible to change your stance on unproven claims. Over time you develop a network of claims that strengthen each other. This makes you less susceptible to obviously wrong information because you can easily cross check it based on several existing claims. The downside is that when you see a new obviously correct claim it could potentially require you to throw out a large portion of your existing beliefs. It's less risky to just deny the claim even if it had substance.