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## Main Question or Discussion Point

Would I be right in supposing that the function of coordinates is to allow one to find an object that one knows to exist in relation to another which one also knows exists?

And if said coordinates do an acurate job then these coordinates are said to be correct until such time as innaccuracies do appear at finer measurements?

Now ,suppose we are just talking 3 dimensions (obviously time as well) would it be fair to say the the 3 coordinates we use are merely a conventional convenience and that any other set of 3 that did the job would be acceptable?

So ,what about if we were to replace the x and y courdinates with coordinates (say called x" and y") that were in fact 2 lines that intersected at an angle other that 90 degrees (45 /135 say) and again the z axis was likewise tilted at another angle that wasn't a nice symetric 90 degrees?

Would these axes be capable of performing the same job (albeit more laboriously) as the conventional axes we normally work with?

Carrying on from this (assuming that all that was correct) can a similar argument apply to phenomena like dark matter in the universe.What I mean is that, if we cannot locate it , does that argue for a need for an extra dimension?

Apparently 11 is the number that I hear being talked about.

But would it be fair to say that the proof of whether any of these dimensions actually exist in reality would be that they would locate an object (that we know exists) which we cannot pinpoint with the dimensions which we have been using previously?

And if said coordinates do an acurate job then these coordinates are said to be correct until such time as innaccuracies do appear at finer measurements?

Now ,suppose we are just talking 3 dimensions (obviously time as well) would it be fair to say the the 3 coordinates we use are merely a conventional convenience and that any other set of 3 that did the job would be acceptable?

So ,what about if we were to replace the x and y courdinates with coordinates (say called x" and y") that were in fact 2 lines that intersected at an angle other that 90 degrees (45 /135 say) and again the z axis was likewise tilted at another angle that wasn't a nice symetric 90 degrees?

Would these axes be capable of performing the same job (albeit more laboriously) as the conventional axes we normally work with?

Carrying on from this (assuming that all that was correct) can a similar argument apply to phenomena like dark matter in the universe.What I mean is that, if we cannot locate it , does that argue for a need for an extra dimension?

Apparently 11 is the number that I hear being talked about.

But would it be fair to say that the proof of whether any of these dimensions actually exist in reality would be that they would locate an object (that we know exists) which we cannot pinpoint with the dimensions which we have been using previously?