Although Friedrich Hayek is usually regarded as the standard-bearer for such arguments, I show that he builds on arguments Smith made in the eighteenth century. I also show how Smith's arguments would seem to undermine recent arguments defending paternalism of government experts, like those found in Sunstein and Thaler's Nudge and Peter Ubel's Free Market Madness.
I discovered today the recent publication of another paper that draws conclusions similar to mine, and even relies on some arguments that are similar, though does so with a heavier emphasis on economic analysis than, as in my paper, on philosophical and exegetical analysis. It is "The Knowledge Problem of New Paternalism," by Mario J. Rizzo and Douglas Glenn Whitman, published in Brigham Young University Law Review (vol. 2009, no. 4: 905-968; text available here). I highly recommend Rizzo's and Whitman's article.