2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/9464We briefly review the emerging paradigm which links the radio-quiet and radio-loud classes of AGN to the different accretion states observed in stellar mass black hole X-ray binary systems (BHXRBs), and discuss the relevance of the AGN/BHXRB connection to blazar variability.4 pages, 1 figure, to appear in the proceedings of the workshop on `Blazar Variability: entering the GLAST Era', Miami, April 2005 (ASP Conf. Series)Astrophysicstext