The theory of intergenerational justice emphasizes that the present generation has the obligation to be concerned about the existence of future generations.The"non-identity problem"posed by Parfit suggests that different outcomes of choic-es made by responsible agents can change the existence of future generations in terms of numbers and identities.Among the various responses to the problem of non-identi-ty,Scanlon's contractualist solution,which centers on moral responsibility,with the responsible subject making justified decisions on the basis of the impersonal principle and justifying the principle of justification on the basis of equality,explains the prob-lem of wrongful procreation in the problem of non-identity in a more reasonable way.When explaining pollution policy cases,there is an implausibility in Scanlon's con-tractualist solution.Government policy can be reasonably justified if one qualifies the method of assessing harm and liability through five conditions.
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