The most salient feature of the Medicare prescription drug benefit is its uncertainties. That was perhaps the key insight at a roundtable conducted by Pharmaceutical Executive in conjunction with the executive summit "Medicare Part D: Can There Be Alignment Between Government Goals and Industry Opportunity?" cosponsored by this magazine and Model N, a revenue management-solution provider. With a panel that included representatives from pharma, the legal community, prescription benefit managers, and data and service providers, the roundtable looked at the goals of Part D, the threats and opportunities it presents to stakeholders, the skills companies need to develop, and the way the playing field is likely to change over the next few years. What follows is an edited version of the conversation.