  The characteristics of a meaningful effective field theory (EFT) analysis are
discussed and compared with traditional approaches to NN scattering. A key
feature of an EFT treatment is a systematic expansion in powers of momentum,
which is demonstrated using an error analysis introduced by Lepage. A clear
graphical determination of the radius of convergence for the momentum expansion
is also obtained. I use these techniques to compare cutoff regularization, two
forms of dimensional regularization, and the dibaryon approach, using a simple
model for illustration. The naturalness of the parameters and predictions for
other observables are also shown.
