Tradition. Causality is a classic concept of philosophy, and not unique to any particular science. Many sciences just treat it as an assumption. Pearl’s account of causality continues from the counterfactual accounts developed by Lewis and Stalnaker, both philosophers. But I don’t really care to argue about the boundary of ‘philosophy’. You could place causality under physics, maybe, or statistics.
Tradition. Causality is a classic concept of philosophy, and not unique to any particular science. Many sciences just treat it as an assumption. Pearl’s account of causality continues from the counterfactual accounts developed by Lewis and Stalnaker, both philosophers. But I don’t really care to argue about the boundary of ‘philosophy’. You could place causality under physics, maybe, or statistics.