To suggest that new technology makes homogeneous cohorts unnecessary today, Alex, seems to me to be less than intellectually honest. To my mind, the hypothetical nature of that suggestion needs to be stated. If in fact you assume that we'll go the route of becoming more “reductivistic,” then why in this context don't you accept the statements of Dr. Carruthers and Dr. Lipkin, both masters in their fields? Surely we aren't playing intellectual games here, given that lives are at stake. Perhaps (as you suggest) however, I'm misunderstanding your purpose.