Responsibility for causing a problem and capacity to help solve it need not coincide. Future people’s identities may also depend on present policy, complicating comparative harm. Ethical reasoning should make these priorities explicit while relying on independent scientific evidence for claims about physical effects and timelines.
Imagine two fictional communities asked to reduce use of a shared resource. One uses it mostly for luxury activities, while the other depends on it for essential services. An identical reduction can impose sharply different burdens. Compare equal shares, capacity-based contributions, and protections for basic needs. The example illustrates principles of responsibility; evaluating an actual intervention requires evidence about its environmental effects, feasible alternatives, and the communities affected rather than a philosophical formula alone.