11. Hindsight Bias

It is very easy to say “I knew it” or “I always thought it will be that way” after some event happened. But if a person haven't got special training he usually can't determine and record his confidence level for beliefs and forecasts. It leads to the extending current level of confidence to the past state of the mind.

Additional information:
“Thinking, Fast and Slow”, D Kahneman, 2011.