[Paddlewise] boat copies

Peter wrote:


> John adds that scaling should be considered in considering whether a hull
> shape is a copy.
> As we drift away from an identical shape, and the new shape has some parts
> scaled up or down, some aspects altered deliberately, and some new, the
idea
> of a copy becomes subjective. The offended creator of the old boat will
see
> similarities, the new boat maker will say the differences point to
something
> now new.
> If I try and apply this to the case at hand, I have a grave concern the
> goalposts will keep on shifting.

Peter, I owe you a huge apology. Frequently I write thinking  readers  know
things that appear self evident to me only to find out the reader hasn't
clue. I assumed most people understood the concept of scaling. Big mistake
as your post clearly establishes.

When one scales a "boat" (and here you must understand that I am tslking
about a boat not a part of a boat) one does not scale parts of it. You do,
however scale its principle dimensions such as  length, depth or beam or
even all three or two. Clever readers will recognise that scaling the length
will leave the sections unchanged, scaling the depth will leave the
waterlines unchanged and scaling the beam will leave the buttucks unchanged.
Scaling all three will change the size but not the form or its coefficients.
A scaled boat will reveal itself as a copy through application of the
various parameters I listed in a previous post.

The concept of copies may appear subjective to you but as you may recall I
provided objective methodology to establish the validity of a claim of
copying. If you consider the various measuerments and co-efficients as
subjective then I doubt if anything will clarify your vision. Perhaps this
is why you and Matt can't reach some kind of amicable agreement. You just
aren't speaking the same language from the same knowledge base.

Cheers

John Winters

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