text:  Consider what a very serious thing it is--what a shock to the public confidence in the administration of justice--to reverse a judgment pronounced after due deliberation and under the gravest responsibilities by a court of justice! The law and constitution are properly very tender in the exercise of such a perilous power and have limited it to the case of "MANIFEST" error--that is not the vehement the immense _probability_ that there has been error--but the CERTAINTY of such error _necessarily and exclusively appearing from the record itself_