a great article
Here is the big idea. . .
By carefully designing the way people can choose within a universe of options you can direct them to choices you think are good for them while preserving their freedom of choice. For example, when one goes to get a driver's license and is presented with the option to be an organ donor many more people will sign up to be a donor if that is the default option, even though they could easily decline with the click of a mouse or a mark with a pencil. On the other hand, if the default option is not to participate, many fewer will.
Nudge makes a good point, but it's not enough for a book. Check it out of the library. Read the condensed version. Just read this review and extrapolate. It's a useful premise but could have been fully communicated in a long magazine article. I could have stopped reading 1/3 of the way through and not missed anything.