However, the existence of two different engine designs increases the likelihood of something going wrong either with the basic design or with maintenance procedures because additionalcomplexity is introduced into the fleet.
Rather than simply doing away with the deductions that caused the problems and reforming the rates to maintain progressivity, Congress thought a much more convoluted solution was just what the doctor ordered, adding an additional layer of complexity that has plagued the tax system since its inception.
Or, worse, retailers might be forced to adopt additional solutions on a market-by-market basis, which reduces connection with the customer and adds complexity to the IT landscape.