Exactly! And besides, you shouldn't be amazed how closely tied physics and biochem are. Besides that, don't have to be a purely physics Ph.D to teach a freshman physics class. His area of research can be whatever he wants. If it happens to coincide with using lasers, NMR's, atom smashers (isn't this the obvious one?), so be it.

Good review, and love 'the critic' usericon.