KN and KN two-body physics: 2-5 GeV/c

The author reviews KN and KN induced reactions in the intermediate energy region to sketch present theoretical understanding and to high- light promising avenues for the future. He emphasizes several experiments that should advance or consolidate understanding: polarization for K/sup 0/p to K/sup +/n, K/sup -/p to K/sup 0/n, K/sub L//sup 0/p to K/sub s//sup 0/p; R parameter data for K/sup +/p to K /sup +/p and KN to Lambda pi and Sigma /sup +/ pi . A determination of precise cross section differences between K/sup +or-/p and K/sup +or- /n elastic scattering; between K and K charge exchange and between KN to pi Y and pi N to KY is described. (20 refs).