  I argue that the high percentage of PNe that are shaped by jets show that
main sequence stars in binary systems can accrete mass at a high rate from an
accretion disk and launch jets. Not only this allows jets to shape PNe, but
this also points to the importance of jets in other types of binary systems and
in other processes. These processes include the grazing envelope evolution
(GEE), the common envelope evolution (CEE), and the efficient conversion of
kinetic energy to radiation in outflows. As well, the jets point to the
possibility that many systems launch jets as they enter the CEE, possibly
through a GEE phase. The other binary systems where jets might play significant
roles include intermediate-luminosity optical transients (ILOTs), supernova
impostors (including pre-explosion outbursts), post-CEE binary systems,
post-GEE binary systems, and progenitors of neutron star binary systems and
black hole binary systems. One of the immediate consequences is that the
outflow of these systems is highly-non-spherical, including bipolar lobes,
jets, and rings.
