What is a real-life example of hindsight bias?

A real-life example of hindsight bias is believing a test was easier than it actually was once we know the correct answers.

Imagine you are answering a multiple choice question and can’t really decide between two of the possibilities. You select one of them but are not very confident that it is correct.

The next day you find out the correct answer and think to yourself, “Yes! I knew that was the correct answer all along.”

Hindsight bias has made you overestimate your knowledge of what the question was testing.