| This constraint is also essential for defining a numeraire, that is the monetary expression of one hour of labour. |
| More practically, income could be measured as the money value, or value in some other numeraire, of the goods and services directly yielding utility, but only of those. |
| No one knows how long savers will continue to accept a depreciating monetary unit as numeraire for their savings. |
| Labor can be a numeraire of profits, but that hardly justifies the labor theory of value, because many things can be numeraires. |
