Why worry about gains and losses? A little fulfillment in life is better than perfection.

History of Currency. How was gold and silver used in ancient times?
Silver was measured by weight.
Gold was made into thin sheets the size of chewing gum, rolled or folded, and cut with scissors for weighing and use.
The more troublesome aspect was distinguishing between genuine and counterfeit. Ordinary people couldn't tell, and generally took it to a money exchange to convert it into local common copper coins. Therefore, ancient money exchanges were particularly numerous.
If you couldn't carry a thousand taels of silver, you would be given a deposit book (silver note). Payment upon presentation of the note.
Direct use of gold and silver was rare, usually only in special circumstances, such as maritime trade, purchasing land, or large gifts.
However, using gold and silver was very cumbersome.
Later, Europe invented the silver dollar, mainly by Britain, Spain, and Mexico. The significance of the silver dollar is to establish a standardized measurement unit, as silver dollars cannot be counterfeited.
Because, to create the same shape and weight, it is nearly impossible to use fake metals. This thoroughly resolved the standard for trade payments.
Later, someone started scraping some silver filings from the edges of silver dollars. Thus, Newton invented the serrated edge for the silver dollar.
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