Concorde Fallacy / Sunk Cost Fallacy

The Concorde fallacy is one of the many smokescreens that are used to cover the fact that the reasoning is based on one of the three fallacies of Agrippa's trilemma. Whenever a logical fallacy is committed, the fallacy has its roots in Agrippa's trilemma. All human thought (without Divine revelation) is based on one of three unhappy possibilities. These three possibilities are infinite regress, circular reasoning, or axiomatic thinking. This problem is known as Agrippa's trilemma. Some have claimed that only logic and math can be known without Divine revelation; however, that is not true. There is no reason to trust either logic or math without Divine revelation. Science is also limited to the pragmatic because of the weakness on human reasoning, which is known as Agrippa's trilemma.

The Concorde Fallacy / Sunk Cost Fallacy occurs when there is a temptation to continue defending or favoring a project, a line of research, a theory, an idea, an action or any other thing rather than admitting the error and dropping it. No matter how much time, money, or ego has been spent, this has no bearing on reality.

Examples of the Concorde Fallacy / Sunk Cost Fallacy

Rocky: “And what makes you think that is true?”

Sandy: “I guess I’m making the whole thing up. . . . Wait! You have to convince me that Jesus Christ exists.”

Rocky: “Why would you listen to me when He speaks to you all the time and you won’t listen to Him?”

This is the end of an actual conversation where someone we will call Rocky was doing some active listening with a person who refuses to acknowledge God, whom we will call Sandy. Rocky just kept listening and drawing out Sandy to understand his reasoning as the two ate lunch at a local restaurant. Sandy ran out of gas about 60 minutes later and made this statement. However, the result was for Sandy to become a much more dedicated to his own rationalized belief system.