There are those who, when presented with a novel but yet unproven idea or technology, call upon their knowledge of the universe to say, "No, that is not possible."
And then there are those who call upon their knowledge of the universe to ask, "What if that were possible? What else would have to be true for that to be so?"
The former may stay comfortable for now.
But the future will be built upon the latter.
The future will be built upon those who believe that we will know the unknowable.