1. sunk costEconomics, See also サンクコスト, See also 埋没原価
Wikipedia definition
2. Sunk costsIn economics and business decision-making, sunk costs are retrospective (past) costs that have already been incurred and cannot be recovered. Sunk costs are sometimes contrasted with prospective costs, which are future costs that may be incurred or changed if an action is taken. Both retrospective and prospective costs may be either fixed (continuous for as long as the business is in operation and unaffected by output volume) or variable (dependent on volume) costs.
Read “Sunk costs” on English Wikipedia
Read “埋没費用” on Japanese Wikipedia
Read “Sunk costs” on DBpedia


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