Organizations become increasingly homogeneous through

Hiring shapes culture

Every person added to an organization either reinforces or shifts its culture. Hiring is not just a talent acquisition function — it is a cultural infrastructure decision. The people you select determine the behavioral deposits that shape the cultural sediment (L-1643), the tolerance floor that defines the cultural minimum (L-1644), and the schemas that propagate through the organization (L-1629). A single hire who embodies the desired culture reinforces it through daily behavior. A single hire who contradicts the desired culture erodes it through daily counter-deposits — and the erosion is difficult to reverse once the person is embedded in the organization's social network.