mit.edu - Martin Reeves, Simon Levin, Johann D. Harnoss, and Daichi Ueda. Martin Reeves is a senior partner at The Boston Consulting Group’s (BCG) New York office and director of the BCG Henderson Institute (BHI); he tweets @MartinKReeves. Simon Levin is professor of ecology and evolutionary biology at Princeton University who specializes in the theory and management of complex adaptive systems. Johann D. Harnoss is a project leader at BCG and an ambassador to the BHI. He tweets @Johann_Harnoss. Daichi Ueda is a consultant at BCG and ambassador to the BHI.