brain lies, how they are invented

http://www.nytimes.com/2008/06/27/opinion/27aamodt.html?em&ex=1214884800&en=9b34d24b60bc382e&ei=5087%0A

This phenomenon, known as source amnesia, can also lead people to forget whether a statement is true. Even when a lie is presented with a disclaimer, people often later remember it as true.

With time, this misremembering only gets worse.
....
In the same study, however, when subjects were asked to imagine their reaction if the evidence had pointed to the opposite conclusion, they were more open-minded to information that contradicted their beliefs. Apparently, it pays for consumers of controversial news to take a moment and consider that the opposite interpretation may be true.