A nail or a nuclear reactor.
Each is a product of human labour,
Raw materials transformed by neighbour
And neighbour into something rather more
Useful than ore and unharnessed energy.
Both are products of all the work required
In their making. Workers only being hired
For rather less than whatever may be
The value they create, the difference,
When the total value is divided,
Is taken by those who have provided
The means whereby work works its immense
Power to create. Though those means come through
Workers previously creating their value.