Sunday and again yesterday I wrote posts here about the biomedical world. Yesterday's, you may recall, I summarized a paper by Andrew Lo and two other scholars, proposing a new system for the private financing of biomedical research. Today I'd like to say something about another recent paper by Lo [well, not so recent -- I'm behind the curve -- this goes back to 2011], that is the other sign of the coin of Lo's own versatility. The paper offers a neuroscientific look at the impulses of traders and investors. In both cases, the paper I summarized yesterday and this one , Lo occupies the borderland between biology and finance. But he faces in opposite directions: in the one case discussing the best ways to finance biology, in the other case discussing the biological bases of finance. Now: isn't that a neat symmetry? So who is Lo? He's the possessor of a Ph.D. in economics from Harvard University (1984). He has been on the MIT finance faculty since ...