Paul Lutus wrote:
> The point I am making is that the matrix 
> can't
> function if it is thought of as nine scalar values rather than a 3x3 
> square
> matrix.

I think the point they are making is that not everyone uses matrixes for 
the same thing.  I agree that for most applications, they should be 
treated as immutable.  But they are saying that they not only think they 
should be modifyable, but that they need them to be modifyable to be 
useful to them under their circumstances.

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