Progress through differentiation
How can one law explain change in a fossil, a social custom, a joke, and the sciences themselves? The answer stakes the unity of knowledge on a movement from loose uniformity toward concentrated variety.
Spencer’s 1857 essay “Progress: Its Law and Cause” supplies the formula that the later system would develop: progress moves from the homogeneous and indefinite toward the heterogeneous and definite. The essays test that claim across geology, paleontology, physiology, psychology, etiquette, fashion, music, and the history of science, rather than treating evolution as biology alone. Against explanations that isolate each field, he links differentiation to causality, classification, and function. The volume makes the pattern portable.
- geology
- epistemology
- philosophy of science
- astronomy
- evolution
- psychology
- logic
- cosmology
- physiology
- methodology
- emotion
- aesthetics
- paleontology
- classification
- scientific method
- evolutionary theory
- social evolution
- physics
- history of science
- mechanics
- stratigraphy
- heterogeneity
- mathematics
- differentiation
- cognition
- measurement
- analogy
- functionalism
- nebular hypothesis
Enter a dialogue
- When a person mistakes increasing variety for progress, what would your law require them to examine?
- Progress can produce specialization without wisdom; why should you count differentiation as development rather than fragmentation?
- To read a curtsey as inherited deference, what must a person surrender about social polish?
- A joke releases nervous energy and music follows excited speech; where does development begin rather than mere discharge?
- What does a science lose when its increasing precision cuts it off from the other sciences?