http://coinmamailtcrg7fw6uorut3d35bk35rtmntkrtb4fgeov6pefvfutqd.onion/blog/a-history-of-money-from-barter-to-banknotes-to-bitcoin
‘Seeing is believing,’ and so many have a hard time dissociating the idea of money and the physical manifestation of money. Ask a child ‘What is money?’ and you’re likely to receive a range of answers, many of which reference something physical.