  A lot has been learnt in the 15 years since the first data on jet
modification at the Relativistic Heavy Ion Collider (RHIC). These proceedings
will describe the portion of the theory that is unassailable, and attempt to
chart a course for the next period of precision measurements and related
calculations. In particular, we will focus on the emerging series of higher
order calculations, which may reveal the scale, energy and temperature
dependence of jet transport coefficients, as well as develop ingredients for a
future NLO calculation of jet modification. Connections with the underlying
degrees of freedom in the Quark Gluon Plasma (QGP) will be explored. We will
discuss the challenges faced by Monte-Carlo event generators and their
comparison with a broad spectrum of jet modification data. First principles
calculations of transport coefficients, and the determination of new transport
coefficients which encapsulate the transition of energy momentum from the jet
scale to the medium scale will also be discussed.
