Science should not depend so heavily on imagination ..or that would make it science fiction. what most consider science today is little more than science fiction. People of the past where perhaps a lot smarter than they are given credit for. I often wonder what they would make of todays "science" Probably they would have a good laugh. Theories are not science unless they can be proven. There is a giant question mark ...like Ghost Bustes Marshmellow Man size hanging over what we have been led to believe science is and it is not going away anytime soon.