Fourth, as everyone would agree, the reviewing court must find that the treatment plan is in the defendant's best medical interests. Finally, Justice Breyer pointed to "strong reasons" for a court to consider first whether administration of medication could be justified on the alternative grounds of dangerousness. In his view, an inquiry into whether a prisoner is dangerous is likely to be more "objective and manageable than the inquiry into whether medication is permissible to render a defendant competent." Even granting the Court's unfamiliarity with several generations of research that demonstrate the frustration of trying to predict who will be violent, the record of this case itself should have suggested that such prognostication is no simple matter. Sell was believed dangerous by his treaters, a finding upheld by administrative review and by the federal magistrate. But the district court overturned that ruling, and the Court of Appeals agreed. Breyer himself, in the venue most distant from the clinical setting and least familiar with it, appeared to conclude that the dangerousness of Sell's erotomanic longings was underestimated by the lower courts. Given this record, it should have been obvious to the Court that determining dangerousness is typically neither "objective" nor particularly "manageable."