By Amad Otis Ross By Wednesday, November 28th, the Columbia graduate student union will have decided whether to agree to a framework for negotiations offered by the university. Should the Graduate Workers of Columbia (GWC) and the Columbia Postdoctoral Workers (CPW) agree to the framework, the university will for the first time begin bargaining with both unions by February 25th, marking a turning point in the years-long struggle for the right to negotiate contracts for better