I don't think the scientific method and the science fictional method are really analogous. The thing about them is that neither is really practiced very much, at least not consciously. But the fact that they are methodical does relate them. ↗
Admittedly, the body of scientists, as a whole, does uphold the authority of science over the lay public. It controls thereby also the process by which young men are trained to become members of the scientific profession. ↗
I write because I write - as anyone in the arts does. You're a painter because you feel you have no choice but to paint. You're a writer because this is what you do. ↗