Spin working group summary

Although the topic of spin was organized as a separate session in this workshop, it clearly permeates almost all areas of physics discussed. Spin plays a prominent role in QCD, the theory of strong interactions between spin-1/2 quarks and spin-1 gluons. Historically, there have been many examples of how polarization measurements have forced us to change the way in which physical processes are viewed. It was obvious from this workshop that there remain many important open questions in nuclear and particle physics that require further polarization measurements in the hadronic sector. Although the majority of the experiments discussed in this session involved lepton-hadron and hadron-hadron reactions, it should be emphasized that the nucleus further provides a powerful laboratory in which to test our understanding of QCD in a strongly interacting medium