Reasons for the Occurrence of Evolution
According to Spencer’s first claim, the absolutely homogenous must lose equilibrium, and the comparatively homogeneous must transform into the relatively less homogeneous. The fact that the many components of a homogeneous system are continually exposed to various stimuli that tend to separate them from one another is one cause of this instability. According to Spencer, when one aspect of a formerly homogenous system changes, other system elements will follow suit, increasing multiformity.
The multiplicity of effects is the second component in the order; however, it is not very significant. According to Spencer, the effects multiply geometrically. A slight alteration in a previously homogenous system has more significant consequences. As a result, the formerly homogenous system becomes more and more heterogeneous over time.
Spencer also spoke on how segregation affects evolution in his third point. Because its components are similar to one another yet distinct from those of other sectors, a sector separates itself from the others. When one sector is exposed to and adopts the distinctive qualities of other sectors, the impacts are multiplied, and this segregation helps to preserve disparities among the sectors.