My training being in physics, I do view social sciences and behavioral sciences as somewhat lacking in the concrete.
Not to burst your bubble, but I know a Chem professor or two who would view "physics" as less than concrete as well.
Given the apparent arbitrary characteristics that certain molecules (and even numbers of molecules) display, they give solid reasoning to state that any focus in science is as good as any school of philosophy. (And science BEING a philosophy is even easier to understand)