Concorde is a prime example of a government deficit project. Even though both parties, Britain and France, had long known that the supersonic aircraft business would never work, they continued to invest enormous sums of money in it – if only to save face. Abandoning the project would have been tantamount to admitting defeat. The sunk cost fallacy is therefore often referred to as the Concorde effect. It leads to costly, even disastrous errors of judgement.
