the world is flat... well that's what they used to think , based on the best available evidence. What the scientific community perceive at any moment in time is based on the tools available to science at that point, and the language available to express that perception. Then, sooner or later, something comes along to blow that perception out of the water, the old rules are suddenly seen to be flawed or inadequate. All of which probably means that we will never know, at least not in our current state of existence, whatever that is.