The creation of quark-gluon plasma that flows as a nearly perfect fluid in collisions of heavy nuclei at RHIC and the LHC is now well established. Recently similar experimental signatures are observed in p+A and even p+p collisions at similar energies. We detail the experimental results from a geometry engineering program with collisions of p+Au, d+Au, and 3He+Au at RHIC. We then walk through a critical analysis of various theoretical interpretations of the experimental data.
University of Colorado Boulder and CEA/IPhT/Saclay