  The positive-plaquette Manton action at weak coupling is a reasonable action
for short-distance phenomena. We propose an iterative scheme for evolving this
action into an effective action for longer distance scales. We report on the
first step of this scheme in which we have measured ``blocked'' Creutz ratios
with lattice spacing 2a at beta = 16 on a 32^4 lattice and have searched for an
effective action that yields the same ratios on a 16^4 lattice.
  We also suggest a mechanism for quark confinement that relies upon the
lightness of the u and d quarks and formulate a way of testing it in lattice
simulations of QCD.
