  Relativistic jets can extract mass-energy from a black hole. In semi-detached
black hole binaries the jet ejection process constitutes a `consequential
angular momentum loss' (CAML) process. The effect of this jet-induced CAML is
to lower the transfer rate below the value set by systemic driving and to
stabilize otherwise unstable systems. Implications of jet-induced CAML for GRO
J1655-40 are discussed.
