Cass Sunstein reviews "Against Autonomy: Justifying Coercive Paternalism."

That's a book by Sarah Conly, published by Cambridge University Press. 206 pages, $95. $95! Fortunately, we cannot be coerced to buy that. I will exercise my autonomy and refrain from buying it. I'll just read Sunstein, for free, here.

[A] significant strand in American culture appears to endorse the central argument of John Stuart Mill’s On Liberty....

the only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others. His own good, either physical or mental, is not a sufficient warrant. He cannot rightfully be compelled to do or forbear because it will be better for him to do so, because it will make him happier, because, in the opinion of others, to do so would be wise, or even right.

Sunstein refers to social science research that shows people actually aren't very good at making decisions for themselves. We have "present bias" (and don't pay enough attention to the future), we're bad at assessing probability, and we're "unrealistically optimistic."

Until now, we have lacked a serious philosophical discussion of whether and how recent behavioral findings undermine Mill’s harm principle and thus open the way toward paternalism. Sarah Conly’s illuminating book Against Autonomy provides such a discussion....

To Mill’s claim that individuals are uniquely well situated to know what is best for them, Conly objects that Mill failed to make a critical distinction between means and ends. True, people may know what their ends are, but sometimes they go wrong when they choose how to get them....

If the benefits justify the costs, she is willing to eliminate freedom of choice, not to prevent people from obtaining their own goals but to ensure that they do so....

A natural objection is that autonomy is an end in itself and not merely a means. On this view, people should be entitled to choose as they like, even if they end up choosing poorly. In a free society, people must be allowed to make their own mistakes, and to the extent possible learn from them, rather than facing correction and punishment from bureaucratic meddlers. Conly responds that when government makes (some) decisions for us, we gain not only in personal welfare but also in autonomy, if only because our time is freed up to deal with what most concerns us....

 As for Sunstein himself, he prefers a softer form of government manipulation, described in the article and in his book "Nudge: Improving Decisions About Health, Wealth, and Happiness."