If someone believes that a specific person's success guarantees anyone else associated with them will also succeed, which fallacy are they committing?

The belief that a specific person's success guarantees that anyone associated with them will also succeed exemplifies the composition fallacy. This fallacy occurs when someone assumes that what is true for an individual must also be true for the group to which they belong. In this scenario, the individual’s success is incorrectly generalized to all associated individuals, disregarding the individual competencies or contexts of those people.

Understanding this fallacy involves recognizing that success can be influenced by numerous factors, including personal effort, circumstances, and individual attributes. Therefore, just because one person is successful does not imply that all surrounding individuals share the same outcomes. This reasoning highlights the error in assuming that collective success is a given based solely on the achievements of a singular individual.