Discusses connections between the ambiguous status of Mexican immigrants, Mestizas, and others inhabiting border areas described in Marleen Pugach's "On the Border of Opportunity" (1998) and in Gloria Anzaldua's "Borderlands: La Frontera, the New Mestiza" (1987) and postmodernist identity-formation opportunities in Zohar and Marshall's "The Quantum Society" (1994). (MLH)