However, if I asked you to describe a £10 note to someone who had never seen one so that they could create it from scratch, I’m guessing that you wouldn’t get very close to reality. Are the “£” and “10” in the same color? Does the word “ten” appear on the note anywhere? If so, how many times? How many digits does the serial number have? Is it printed vertically or horizontally? What pictures are there? How big is the note exactly? Your unconscious mind has the answers, but your conscious mind is evidently preoccupied with other things!