The Adventure and the Prize
  This article presnts a condensed summary of separate, overlapping, presentations to the Workshop on Polarized Drell-Yan Physics (Santa Fe, NM, Oct. 31-Nov.1, 2010),the GHP 2011 Worshop (Anaheim, CA, Apr.21-27, 2011) and the Transversity 2011 Workshop (Veli-Lozinj, Croatia, Aug. 29-Sep. 2, 2011) during which the author advocated for a potential experimental program based at Fermilab utilizing high-intensity polarized proton beams of 120 GeV/c to 150 GeV/c. Some possible experiments in this program are introduced briefly. Interpretations for these potential experiments are presented in terms of a hypothetical solution to the "Quantum Yang Mills Theory" problem posed by Arthur Jaffe and Edward Witten as one of the seven Millenium Prize Problems in Mathematics issued by the Clay Mathematics Institute. These comparisons illustrate the close connection between transverse spin observables and the complex dynamics of confinement and chiral symmetry breaking found in quantum chormodynamics. 
Dennis Sivers
hep-ph