@parados,
parados wrote:Because we find out new things and incorporate them into our knowledge.
This is the second part, where is the first part - who has invented the rules under which the big bang has been operating - and if it is still in operation along the edges of the universe, how did it happen so that the whole universe is at one and the same age ... and why are we into the center of the universe (equal red shift in any direction) - this is very suspicious.
parados wrote:You are demanding that things not change so why do adults normally act different compared to newborns?
I am not demanding anything of the kind - the question was if the physicists 'have a pretty good grip on things' why do they change continuously their representation of the world without even trying to prove whether the world itself has changed or not? The change in the representation has in no way impact on the physical world itself.
Further, if the laws of physics have always been 'relative' (and subject to amendments), what is the guarantee that the current laws are not that 'relative' as well?