Answer:
the Thomas theorem
Explanation:
Thomas theorem: In sociology, the term "Thomas theorem" was proposed by Dorothy Swaine Thomas and William Isaac Thomas during 1928.
The Thomas theorem is described as a condition that states if an individual perceives a specific situation as "real" then it would be considered as real in its result or consequences as well. In short, a person's behavior doesn't only depend on the "objective reality" of a particular situation rather it depends on the person's "subjective interpretation" related to its reality.
In the question above, the given statement signifies the "Thomas theorem".