From the Journal of Economic Education (hat tip to "Truth on the Market") comes the first study I'm familiar with examining whether the choice of undergraduate major has any effect on a lawyer's career earnings.  And guess what?  If you major in economics, it helps; majoring in anything else makes no difference.

Here's the abstract, in full (emphasis supplied):

"Using nationally representative data, the authors examine the effects of preprofessional education on the earnings of lawyers. They specify and estimate a statistical earnings function on the basis of well-established theory and principles. Along with standard control variables, categorical variables are included to represent graduate degrees in addition to the law degree and an assortment of undergraduate major fields. Holding a Ph.D. or M.B.A. degree, with the law degree, is associated with significantly higher earnings in some sectors. Lawyers with undergraduate training in economics earn more than other lawyers, ceteris paribus, and economics is the only undergraduate field associated with earnings that differ significantly. The available evidence supports the hypothesis that economics training increases a lawyer’s human capital compared with other undergraduate majors."

That still doesn't mean Adam Smith would become a lawyer were he alive today; but I know in my heart that he would have an active and energetic blog.