| Accordingly, money is brought forth into society to be used as a medium of exchange to facilitate the trade of goods of all kinds. |
| If a certain type of good is employed as a medium of exchange, one speaks of money. |
| Given a medium of exchange, people can trade even if their wants and needs don't directly coincide. |
| But with personal property creatable on demand from sunlight and dirt, it's not clear what the medium of exchange would be. |
| He then shifts to the use of gold in Greece, Rome, and Byzantium, initially as adornment but later as a medium of exchange. |
| The same qualities that made gold a desirable medium of exchange in the ancient world make orichalc useful to mages. |
