Fanfare knows enough about what his taxes are supposed to be that TurboTax is a valuable tool. When it's right, it does most of the tedious arithmetic for him and when it's wrong, he can easily correct its mistakes. But that leaves a key question unanswered. Is fanfare saying that people who don't know enough about their taxes to spot TurboTax's mistakes shouldn't be trying to do their own taxes in the first place? What if it's not obvious to a naive TurboTax user that TurboTax told him to pay thousands more than he owes. Are we saying it's his own fault for trying to use TurboTax without the proper grounding in tax accounting?
