On the other hand, in Marginal Analysis we ignore past sunk costs, as these have now no bearing on the decision we have to take whether to carry on with the project or not: whatever we decide, these costs have been incurred already and there is nothing we can do about them.
Kwa upande mwingine, katika Uchambuzi Kando sisi kupuuza uliopita gharama kuzamishwa, kama hawa wana sasa hakuna kuzaa juu ya uamuzi tuna kuchukua iwapo kuendelea na mradi au si: chochote sisi kuamua, gharama hizi wamekuwa zilizotumika tayari na kuna kitu tunaweza kufanya kuhusu wao.