Are engineers scientists? What kind of science do they do?
You work at a university? Find a good university with an engineering department, and talk to some people.
Engineers are trained in science. Other than perhaps (I don’t recall exactly) 5 or 6 courses in non-science subjects, all of my college classes were in chemistry and physics. Electric fields, properties of matter, that sort of thing. Electrical engineers, such as myself, shared most of my classes with the physics majors, and my own degree is in electrical engineering and applied physics.
Engineers have many roles, but most of them involve actually “making something happen” using science. Unlike “pure” scientists, who can theorize about things (black holes for example, or evolution), and never have to put-up-or-shut-up, engineers make scientific predictions during their work which are proven by reality (i.e. the computer actually works, or the bridge doesn’t fall down). Generally speaking, when the computer doesn’t work or the bridge falls down, the engineer loses his job. Not so with pure science, since as you often admit “nothing can be proven by science.” You can get a nobel prize in physics for describing the characteristics of a black hole, when no one has even proven such a thing even exists.
Engineering is not “tinkering” as you seem to think. Although in a non-professional sense, in our garages, some engineers like to do that as well.