Advective disk paradigm of black hole accretion includes self-consistent
formation of shocks and outflows from post-shock region. We apply this paradigm
to understand rich variation of the light curve of the black hole candidate
GRS1915+105. We propose that out of five possible {\it fundamental states} the
black hole candidate GRS1915+105 moves around among three of them creating all
possible observed light curves.Comment: Latex file and four figures. Indian Journal of Physics (in press