It is coherent to talks about "A causes B", to the contrary it's a mistake to say that everything is caused by physical laws, and therefore you have no free will, for example (as if your actions don't cause anything). Of course, any given event won't normally have only one cause, but considering the causes of an event makes sense. See the posts on free will, and then the solution posts linked from there. The picture you were thinking about is probably from these posts.