To decide whether the promise can be kept we need only go back to Economics 101. The fundamental and simple ideas we studied there are more than adequate to reach a conclusion. On the first day of class we learned that resources are scarce. That seems very simple, but it has important implications. Resources must be consumed to produce the goods and services we all want.
Resources are obviously finite.
The earth has only so much mineral resource. There is only so much time and human labor available. Individuals have only a finite amount of money to spend to satisfy their needs, wants, and desires. The fundamental problem of economics is that while resources are scarce, human wants, needs, and desires have no limits. We must forgo some desires in favor of others.