ms. sandberg: why? mr. rubin: there really is nobody to play the role that the united states has played for many, many decades now. i think we pair -- play fair trading rules and there is a whole host of issues, no one will play the role that the united states can play. ms. sandberg: the role of america, changing? mr. paulson: it is changing, and all of my friends appear, they -- all of my friends appear, as tim said, we are the strongest and the biggest economy in the world, and if i don't see anyone out there -- and i don't see anyone out there who can fix the problems that we can and we have to lead by example. sure, the political system makes a heart for us to do this today, but i think the thing that we need to do is to show leadership and first, we have to correct . who wants to follow -- we have to be a good example. it starts with what we do at home. secondly showing leadership abroad. take china as an example. china has many more problems. as i have said over and over again, you can make a mistake