  Following the work of Maldacena and Zhiboedov, we study the implementation of
the Coleman-Mandula theorem in the free O(N)/Higher Spin correspondence. In the
bi-local framework we first define an S-matrix for scattering of collective
dipoles. Its evaluation in the case of free UV fixed point theory leads to the
result S=1 stated in the title. We also present an appropriate field
transformation that is seen to transform away all the non-linear 1/N
interactions of this theory. A change of boundary conditions and/or external
potentials results in a nontrivial S-matrix.
