we have always advocated for according toicy principles laid out by economist 's going back to evan smith. it is on our website. we advocate for simplicity on the tesco, neutrality, transparency, stability of the tesco, and no retroactivity. that means, do not change the law retroactively and change taxes on people for income they earn 20 years ago. seven brackets as we speak. some of the efforts consolidate into two. some things are lost during the process. what about the idea? when it comes to your idea of simplicity, buying a bunch of ax brackets are the benefits? guest: it is meaningless. what is compensated about the tesco are all the special rules and provisions and credits. we think there ought to be steeper productivity for the code. right now, someone making $350,000 pays the same tax rate as someone making $350 million. we think there are -- there is a lot of room for tax brackets. guest: it is a clear measure of there has been improvement in that the guard. would be ao brackets further simplification. but you're right that we have software now and most people use turbotax and s