Skeptic’s definition of the day …
Confirmation bias refers to a type of selective thinking whereby one tends to notice and to look for what confirms one’s beliefs, and to ignore, not look for, or undervalue the relevance of what contradicts one’s beliefs.
Read all about it: confirmation bias – The Skeptic’s Dictionary – Skepdic.com.
See also: Confirmation Bias
You don’t we really believe we landed on the moon …Do You?
http://imgs.xkcd.com/comics/conspiracy_theories.png