  I present and discuss a unified scheme for jet launching that is based on
stochastic dissipation of the accretion disk kinetic energy, mainly via shock
waves. In this scheme, termed thermally-launched jet model, the kinetic energy
of the accreted mass is transferred to internal energy, e.g., heat or magnetic
energy. The internal energy accelerates a small fraction of the accreted mass
to high speeds and form jets. For example, thermal energy forms a pressure
gradient that accelerates the gas. A second acceleration stage is possible
wherein the primary outflow stretches magnetic field lines. The field lines
then reconnect and accelerate small amount of mass to very high speeds. This
double-stage acceleration process might form highly relativistic jets from
black holes and neutron stars. The model predicts that detail analysis of
accreting brown dwarfs that launch jets will show the mass accretion rate to be
larger than 10^{-9}-10^{-8} Mo/year, which is higher than present claims in the
literature.
