"Reality can only be understood as a gross exaggeration of fiction". Also timely
"The scientific designer believes in the correctness of his design because he has understood why it must work properly." I'd have liked an example. That sounds like a 'theoretical science designer'. An 'experimental science designer' would check if a design worked (at least to the satisfaction of the client, though I'd hope for more rigour.) "User testing" is a phrase I fear. It usually seems to mean 'tests designed by users', or 'did it work once?'.
This is a bit weirdly coincidental as there's a diagram I drew yesterday on my £2 white-board that has engineer, theoretical scientist, experimental scientist and conceptual artist plotted on axes of precision-abstraction and theory-practice. I don't know where to put 'craftsman'. Somewhere 'origin'al?