Paper money has helped humanity to easily carry things that have a high value and that they can exchange for other goods and services without the necessity of acually carrying other items of value other than the paper money, prior to this people would often exchange products for other products for a certain value, and the cost of things would differ depending on what you traded and to whom, paper money and coins have helped standarized costs and prices.
ive had teachers that made me read a book. and I ended up not reading books anymore. but recently I had a teacher let me pick a book i liked and then i had to explain it. I found a new love for reading.