  In the meeting SN 1987A 30 years later, I presented my minority view that the
majority (or even all) of core collapse supernovae (CCSNe) are driven by jets
rather than by neutrinos, and that the majority of type Ia supernovae (SN Ia)
reach their explosion via the core degenerate scenario. New simulations
presented at the meeting did not achieve an explosion of CCSNe. I critically
examine other arguments that where presented in support of the neutrino-driven
model, and present counter arguments that support the jet-driven explosion
mechanism. The jets operate via a negative jet feedback mechanism (JFM). The
negative feedback mechanism explains the explosion energy being several times
the binding energy of the core in most CCSNe. At the present time when we do
not know yet what mechanism explodes massive stars and we do not know yet what
evolutionary route leads white dwarfs to explode as SN Ia, we must be open to
different ideas and critically examine old notions.
