Can an adult who is alleged to have committed an offence as a juvenile waive the right to proceed in juvenile court?

Rucker, supra , 75 Cal.App.3d 197, 141 Cal.Rptr. 900 therefore stands for the proposition that an adult who is alleged to have committed an offense as a juvenile may waive the right to proceed in juvenile court. The validity of the waiver itself was at issue in Rucker , not the form that the waiver must take or from whom the waiver must be obtained. Because the accused's waiver was personal, Rucker analyzed whether that waiver was knowing and intelligent after the accused was given a proper advisement of rights. Rucker said nothing about whether a personal waiver was required. "It is axiomatic, of course, that a decision does not stand for a proposition not considered by the court." ( People v. Harris (1989) 47 Cal.3d 1047, 1071, 255 Cal.Rptr. 352, 767 P.2d 619.)