My economics teacher told us that money is a unit of energy that stores value. This isn't even true. I asked him to define value and he said pretty clothes, vacation home, anything that matters to you. I told him that nothing really matters to me; he replied that nothing really matters (this is the entire point). I agreed.
What is money?
Some things, like gold, have enough unique and useful physical properties and are resistant enough to corrosion that they will arguably never lose their value short of a nuclear holocaust.
This. Your labor in the US has worth when brought to and exchanged for local currency in other nations.
In contrast, work in Zimbabwe isn't worth a single shit.
>leaf
If nothing matters to you then money has no value to you and thus the system still works.
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It's easier to agree a piece of gold is worth something than to cart around a fuckload of shit and barter for everything.
Means of exchange and store of wealth.
Your teacher was correct and you're a contrarian faggot. Value is derived by wants/needs. No matter what, you need something. Even if it's just food, so your need creates value. Wealth is a function of the value we place on things. Whether you like it or not, we all need things simply in order to live.
Money is a representation of the value of your work * the amount of time you work.
God gives you time, you sell your time to an employer.