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Further..the representation of the space time grid in the show is wrong. Space time is not bent by a "mass" like a ball on a sheet. If you look at what reaslly happens the only way you can use a sheet and a ball is to place the ball under the sheet with the "bend" pointing towards the ball.. draw a point of mass in "space" and try to represent the space time grid and you will see how misleading the ball and sheet anology really is.. the use of such an anology reveals little thought about the subject. The rubber sheet and ball(when used correctly as suggested) is used to explain gravity but it does not.... it can only show that mass distorts space time.
There is no explanation as to how mass bends space time and more infuriating no one involved has ever seen a necessity to have an explanation... simply mass bends space time thats all we need know??? to think this has been about for such a long time and no one sees that as a difficulty is beyond my comprehension. Space time removes the necessity of a force being attached to gravity which all have been happy to live with but that is putting a hand over one eye and looking sideways at the problem thru the other.
Finally what all this says to me people are content to have anything sold to them without asking what is really being said. Space time is such a scarey matter to engage however when it all boils down it says much less than we believe it does..it is geometry after all...
String theory exsists because no one has demanded what science demands of any new concept..proof, evidence, prediction etc. I have no problem with string theory as a proposition, as a philoposhy, as a great idea but to call it science..well I can see why the inteligent design folk think they deserve a go.. string theory is really on no better footing.
The subject to focus upon is how does gravity work. It is the engine of the Universe and all we can do is expalin it by a bend in space time and provide no physical explation of how interactions take place.
If one worked out how gravity works rather than simply push that to one side how many other mysteries would resolve to us.
If string theory can show me how the strings provided a mechanism for interaction I will come on board with support and praise it more, but it should provide some experiments in support before it has the right to continue.
All I can find on gravity via quantum physics, (which is presumably still beyond me but ) there is an attempt to explain the physical interaction between particles... but it is clear that how gravity works is a still a mystery. Understanding how gravity works may see the necessity for dark matter dissappear.. how can anything be contemplated without an explanation of the machinery of gravity??? It is such an important part of everything and gets little attention.
alex
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