Before revision:  One may imagine such a monetary system as being " suspended in thought " . Monetization of " (derivative) promises " of any kind, as well as interest levied by banks in return for money created via monetizing future profits systematically reallocates resources toward the financial institutions, and away from industrial and manual production, farming and labor.
After revision:  One may imagine such a monetary system as being " suspended in thought " and sustained merely by our belief in and our conditioning to it, money is conveniently created out of " (derivative) promises " of any kind, as well as interest levied by banks in return for money created via monetizing future profits systematically reallocates resources toward the financial institutions, and away from industrial and manual production, farming and labor.