"However, you must accept that to a stone age man, if you throw a stone up in the air, it will fall back to the ground. He has absolutely no concept of escape velocity - it is totally meaningless to him, his frame of reference is simply not broad enough to comprehend the possibility of being wrong."
Of course he can comprehend the possiblity he's wrong, how does he know that if he throws it hard enough it won't just fly away? He doesn't know, he's just guessing; he has no basis other than his previous observations, no explanation of how, and why to guide him.
""Blindly accepting that what is, is what there is, and nothing else is possible is narrow sighted, anti-scientific I would suggest"
Blindly? Hardly, i question everything, no matter how accepted it is. I don't believe everything to be set in stone, there's plenty that could well turn out to be wrong. But some things won't. Given the proviso below:
It's "possible" that something with mass could travel through linear space at speeds greater than c........... its also "possible" that we all live in the matrix.... or that none of you exist and i'm having a dream. But we discount those possiblities as being too improbable to be worth consideration. (Really... really, you believe with certainty that the world around you exists, despite the fact that it's "possible" that it doesn't)
"Who said anything about that? You refuse to accept the possibility that at a time in the future a refinement, (your words), to the current model may change this?"
Relativity will no doubt be refined, it won't be anihilated, for an object with mass to travel faster than light it would need to be completely rubbished.