  The possibilities for an underlying theory behind an effective supersymmetric
Nambu--Jona-Lasinio like model of electroweak symmetry breaking with
propagating Higgs boundstates (e.g. supersymmetric topcondensation) are
investigated. The concept of a renormalizable underlying theory turns out not
to be appropriate. We argue that the new theory should come from the Planck
scale and be connected to supergravity. Such a model can be constructed but
necessarily implies a nonlinear definition of the full Lagrangian.
