  We review our work on the statistical uncertainty analysis of the NN force.
This is based on the Granada-2013 database where a statistically meaningful
partial wave analysis comprising a total of 6713 np and pp published scattering
data from 1950 till 2013 below pion production threshold has been made. We
stress the necessary conditions required for a correct and self-consistent
statistical interpretation of the discrepancies between theory and experiment
which enable a subsequent statistical error propagation and correlation
analysis
