  We review the consequences of the sensitivity of the relation between the
moments of a model for the nucleon quark distribution amplitude and the
coefficients of its polynomial expansion. Criteria for a simpler approach to
constructing a model for the quark distribution amplitude are formulated. We
describe how such a simpler (or "haplousterotic") model for the quark
distribution amplitude of the nucleon is obtained from the QCD sum-rule moments
of COZ.
