Royce and arildno, I think you two essentially agree on all the important points. It appears that you two are just interpreting the original question of this thread differently, which is causing confusion where there needn't be any. The original question was:
Bobster said:
What would happen if one day we all wake up and discover that all the physics we've done so far is wrong,it is right from our point of view but for others is completely different ??
Now, this question is phrased a bit ambiguously. The ambiguity seems to turn on the phrase 'for others.' What would it mean for our accepted physics to be incorrect 'for others'?
On one interpretation, perhaps these 'others' simply inhabit a different set of physical circumstances and so observe different physical laws. We might imagine that a 19th century Newtonian physicist would regard his physics as basically 'right,' whereas an alien physicist on a spaceship traveling at near light speed would observe very different physics from his point of view.
I believe Royce interpreted the question this way, and so cited general relativity and quantum mechanics as quite valid examples of where a previously accepted physics turned out to be 'wrong' from certain points of view (in this case, the macroscopic and microscopic 'points of view' of nature, respectively).
On another interpretation of the question, perhaps Bobster means to ask if there might be some other beings who could exist in the same physical circumstances as humans and yet observe different laws of nature. Of course, unless we want to upturn everything we know about nature, the answer here would have to be 'no.' These beings might conceive of the world very differently, but at the very least their observations and predictions of nature would have to be
consistent with ours in the context of our mutual physical circumstances. (As an approximate illustration, an animistic tribe member and a modern physicist will conceive of the world very differently, but at least both will agree that a moving body on the Earth's surface will eventually come to rest.)
I believe arildno interpreted the question this way, hence his emphasis on the fact that QM and GR are still consistent with Newtonian physics in the set of physical circumstances under which Newtonian physics has been shown to work well, namely the 'ordinary' world of stuff existing roughly on the human scale of nature. This too, of course, is a valid point as a refutation of this second interpretaion of Bobster's question.
It appears that the only reason for argument here is that arildno is assuming that Royce is operating under the same interpretation of the question as arildno is (the second one), and vice versa for Royce. You both have made valid points, and there needn't be any conflict between the two.