For example, options and futures are all such things.
Material wealth is concrete and perceptible.
Virtual is something we can't touch, but it has objective value.
Futures are commodities at some time in the future. Oil and gold are all futures trading, but these things have not yet been produced, but they have been bought and sold in the market! !
Option is the right to buy a commodity at some time in the future, just a right, not even a commodity, but the future! !
The economic system on which we live is not only a system of production, distribution, exchange and consumption of products or services, but also an economic symbol system as a measure of value, a medium of exchange, a means of storage, a hedging tool and a symbol of wealth. Currency, stocks, bonds, futures, options and more complex derivatives are common typical economic symbols, and their creation and circulation processes form a symbolic economy or a virtual economy system that coexists with the real economy.
The financial turmoil on Wall Street was caused by the collapse of virtual wealth prices caused by the subprime mortgage crisis, and the risks of various financial innovative products and derivatives appeared at the same time. Because they buy and sell virtual things, there is no guarantee in the entity, and they rely entirely on credit guarantee.