As a human develops a fear for something, they provide their mind with a reason or experience to justify that fear. That being said, a fear exists as irrational in a person’s mind only when the reasoning behind the fear has been eliminated. In a sense, a person cannot see himself or herself as having irrational fears. The irrationality of the fear is dependent upon who is assessing the fear.
In this installation, mice, because of the animal’s seemingly nervous nature, represent irrational fears. Simply for acting as a mouse and eating the cheese, the rodent is hung. There is no real crime for the punishment, or, to interpret the symbolism, without a reason, the fear does not exist.