 Most functionalists, being opposed to type-identity theory, regard the realization-relation as too weak a relation for reduction. Given a strong interpretation of what reductionism consists in—e.g., the type-identity of properties – the realization-interpretation might not suffice to guarantee reduction. It might ensure reductionism at the token-level, but it might, at the same time, be committed to dualism at the property level—though perhaps only a relatively innocent form of dualism. Options to reconcile role-functionalism with reductionism have been introduced in  Section 3.4. 