Originality

Nothing is original. Just like the faces in your dreams,  the ideas have existed in your memory. Some time in your life, they may have come to you in a passing.  Or even in your face but you opted to discard that fact so that you can claim "I came up with that".

Heck, even Facebook ain't the first in social media. Remember Friendster? If you don't, well, God, you make me feel old.

Source: https://www.brainpickings.org/2014/09/26/cryptomnesia-psychology-of-writing/