Thinking you’re good at something simply because you’ve been exposed to it several times.
Sometimes we can trick ourselves into thinking we are god at a thing because we have been exposed to it several times. If you half read about a process or a concept a dozen times, you might think you get it… but then if you try to actually do the thing you’ll realize you have no idea. If you watch cooking shows, you might start to fool yourself into thinking you can cook.
This can be counteracted if you Learn by Doing .