David Fontaine wrote:

> Besides, look at it this way:
> scale <1,1,1> = [1 0 0 0]
>                 [0 1 0 0]
>                 [0 0 1 0]
>                 [0 0 0 1]
> as do rotate <0,0,0> and translate <0,0,0>; it is the *identity*.

It is interesting that so many people care more about what the program is doing
internally than what the users do with the program. I agree, and have said, that
from an internal (program-level) standpoint all the above is true. But, as an
end-user, I would like to know that the program will anticipate my belief that,
if I can translate x*3, and rotate x*3, that I should be able to scale x*3
without generating an error or a warning. This is how many people work in
POV-Ray, and the indigestion that it causes the source code is of little
concern. I have spent the last eight years as the AOL POV specialist, trying to
convince new users that POV-Ray is not that hard to use, yet it seems that there
are some folks who, out of concern for the purity of the internal working of the
code, would make it even harder. But, since we disagree, let's just leave it at
that. I apologige for letting this discussion get this far.

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