“The interests of the parties and of the public in fostering finality in litigation are significant. The parties have suffered the considerable stress and expense of one trial. The reception of new evidence on appeal usually leads to a re-trial, which should only be allowed if imperative in the interests of justice.”” “The interests of the parties and of the public in fostering finality in litigation are significant. The parties have suffered the considerable stress and expense of one trial. The reception of new evidence on appeal usually leads to a re-trial, which should only be allowed if imperative in the interests of justice.””