A company has spent a lot of money on a project that is now failing badly. Even though more money will be lost, the company leader wants to keep going because of all the money already spent. What mistake in thinking is the leader making?

The leader is making the mistake known as the sunk cost fallacy. A sunk cost refers to money or resources that have already been expended and cannot be recovered, regardless of any future decision. In this scenario, the "lot of money" already spent on the project is a sunk cost because that investment is irretrievable. The sunk cost fallacy is the irrational belief that future decisions should be influenced by these past, unrecoverable expenditures. The leader is mistakenly allowing the money already spent to dictate the decision to continue, even though it is clear that continuing will lead to further losses. This is a fallacy because rational decision-making should only consider the future costs and future benefits of continuing the project versus stopping it or redirecting resources. The money already spent is a historical fact and is gone whether the project continues or stops; it therefore has no bearing on the optimal course of action for the future. Continuing a failing project based on past investment rather than its expected future outcomes will result in escalating commitment to a losing endeavor and ultimately lead to greater overall financial losses for the company.