Actually, the meme is correct and something I didn’t realize. Money is deferred proof of work (i.e. a store of wealth) and a unit of exchange. Money allows me to have a unit exchange with you without knowing what your needs are so we don’t have to barter. Since I won’t need to know what you eventually will want for barter, I can store value for the future. Note, any commonly accepted nonperishable commodity (fiat, gold, silver, Monero, rice, beans, cigarettes, beaver pelts, etc) fits this definition too.