IRRITABILITY

By some form of organic mutability, you can develop a mechanism for identifying and calibrating a stimulus which tends to disturb the steady state which you prefer to exist and therefore effectively manage the corresponding physiological reactions to that stimulus.

I believe everyone has thresholds with respect to how the world affects them and triggers a reaction. In addition, the situations and things that could cause me great discomfort may be nothing to another person.

An experimental animation available on KnownOrigin