This is an old but relevant article from the mostly-comedy website Cracked, pointing out 5 ways that human memory is notoriously unreliable. #5. Your Memory Can Be Fooled By Manipulated Images #4. Your Brain Constantly Confuses Reality And Imagination #3. Your Brain Is Half-Blind #2. Other People Can Manipulate Your Memory With Repetition #1. Your Mood Skews Your Memories You can read the full article, with explanations behind these bullet points at http://www.cracked.com/article_18704_5-mind-blowing-ways-your-memory-plays-tricks-you.html So the next time you try to "prove" something is true using anecdotal stories, remember these five points.