  After some brief personal recollections about V.N.Gribov, I demonstrate that
his results and ideas on complex angular momenta may be applied in unfamiliar
directions. As an example, it is shown, that any strong interaction amplitude,
satisfying dispersion relation (in momentum transfer), has infinite number of
energy-plane poles, both for exotic and non-exotic quantum numbers. This result
ensures the necessary condition for existence of exotic hadrons. However,
without more detailed knowledge of dynamics one cannot secure sufficient
conditions for the exotics existence.
