This week, the FAIRtax Guys continue their look at some of the basic fundamentals of the FAIRtax. Again using the FAQ at fairtax.org as a resource, the Guys look at double taxation for seniors, tax free bonds, the burden the FAIRtax will impose on the retail industry, the adequacy of the 23% FAIRtax rate and the question of having exemptions to the FAIRtax.