I understand your point. It is true that philosophy is something quite far from engineering, and that it is dangerous, if not incorrect, to go into the other field without knowledge and the appropriate way of thinking. But the point in the Venn Diagramm where they both overlap is what I consider philosophy of science and philosophy of engineering, i. e. engineering ethics and similar. As to science, I think what I mean is in fact that "recipe" you mentioned on how to do science. I have a relatively low background on science, questions like what science aims, the Demarcation Problem of Popper and similar issues are I think important for a more scientific way of thinking for me.