  We confront the concepts of Wilsonian UV-completion versus self-completion by
Classicalization in theories with derivatively-coupled scalars. We observe that
the information about the UV-completion road is encoded in the sign of the
derivative terms. We note that the sign of the derivative couplings for which
there is no consistent Wilsonian UV-completion is the one that allows for
consistent classicalons. This is an indication that for such a sign the vertex
must be treated as fundamental and the theory self-protects against potential
inconsistencies, such as superluminality, via self-completion by
classicalization. Applying this reasoning to the UV-completion of the Standard
Model, we see that the information about the Higgs versus classicalization is
encoded in the sign of the scattering amplitude of longitudinal W-bosons.
Negative sign excludes Higgs or any other weakly-coupled Wilsonian physics.
