what you describe does sound a little bit like a chicken and egg situation from the point of view that i think you were saying that erm many teachers are ill-equipped, actually, to teach erm physics, perhaps, and chemistry, whereas they are a little bit better able to get across fundamental ideas in biology, and in a sense because of this they are going to produce another generation who perhaps have very ill-founded ideas of these basic sciences and so on and so forth, and somehow one's got to cut into this cycle and actually improve it, improve the output somehow.