CONCEPT
Proximate and Ultimate Causes
Diamond's analytical distinction — inherited from biology — between what happened (proximate) and why it was possible (ultimate), applied as the primary instrument for avoiding explanatory shallowness.
The proximate-ultimate distinction is a methodological tool Diamond imported from evolutionary biology into historical and civilizational analysis. Proximate causes are the immediate mechanisms through which an event occurs — the specific weapons, diseases, or environmental shocks that directly produced the outcome. Ultimate causes are the deeper structural conditions that made those proximate mechanisms available and effective. The distinction is analytical, not hierarchical: both are real, both matter, but they answer different questions. Applied rigorously, the distinction prevents the characteristic error of explaining what happened without explaining why it was possible.
In The You On AI Field Guide
The distinction was developed in twentieth-century evolutionary biology, notably by Ernst Mayr, to separate mechanism-level explanations (how does this behavior work?) from evolutionary-level explanations (why did this behavior evolve?). Mayr argued that confusing the two produced systematic analytical errors: proximate answers to ultimate questions miss the causal structure, and ultimate answers to proximate questions miss the mechanism.
Diamond adapted the distinction for historical analysis in Guns,