From the economic point of view, transporting fifty computers a thousand kilometres is quite a different matter from transporting a hundred tons of grit ten kilometres, although the tonnage per kilometre is the same in both cases.
Der er økonomisk set stor forskel på, om man transporterer 50 computere 1.000 kilometer eller 100 ton grus 10 kilometer. Antallet af kilometerton er i begge tilfælde det samme.