At first I squirmed at the authors' idea of "libertarian paternalism." But they made a compelling case about how government, when it designs systems, affects people's choices and why not do it in a way that makes people better off. I think there is less argument on what makes people better than most think. Very few can argue people are worse off if they: save more, smoke less, exercise more, etc. And with one of the authors taking an important role in the Obama administration, it's useful to read this book and under the with prism with which a lot of future policy decisions will be made.