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Still Confused

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Posted by Rowanda on December 24, 2003 22:22:13 UTC

Here is one confused statement:

"space is independent of coordinate system and hence not measurable"

Space is of course measurable using any coordinate system you like. The point is that an assumption in both General Relativity and Loop Quantum Gravity is that spacetime does not depend on the particular coordinate system you use.

Using your example of a football field, it is the same length whether you use the metric system or the English system of units to measure it. I am sure you realize that, so your problem must be in semantics. You may just be confused about what various terms mean.

Here is another example of your confusion:

"Space is only independent of coordinate system as long as we do not know how to plot it"

This is like saying that a tree does not fall in the forest if you do not see it. Nature is independent of what we think about it. Nature does not care if we do not or can not plot it. I gather you have not studied science

Wanda

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