First the link to this week’s complete list as HTML and as PDF.
Freeman’s argument about water not being fractionated through plant transpiration sounds quite convincing, but is contradicted by the results of Kahmen et al. 2011 (PNAS 108, 1981–1986). So to the extent it relies on this non-fractionation the model by Winnick et al. has to be seen as questionable.
I would love to see studies like Cohn et al.’s done for other professions, especially lawyers.