[sc34wg3] a new name for the Reference Model
Steven R. Newcomb
sc34wg3@isotopicmaps.org
02 Jan 2003 21:51:06 -0600
Steve P. asks whether we're getting closer.
I think it's obvious that we are all working hard
to close ranks.
I sense that we're transforming the tension between
our agendas into a source of immense strength and
durability for Topic Maps. I have a picture in my
mind that Topic Maps is becoming like a girder made
of pre-stressed concrete: a combination of concrete
and steel that is far more useful than either the
concrete or the steel alone would be. Concrete by
itself is vulnerable to any forces that aren't
compression forces (such as tension or shear
forces). The steel that's used in pre-stressed
concrete isn't rigid. All the rigidity comes from
the concrete. To make something really durable,
both steel and concrete are needed, and the steel
must be stretched very tight, compressing the
concrete so hard that the combination is not only
rigid, but it is also extremely resistant to
pressure from any direction.
I think this naming-the-baby exercise is helping us
to appreciate the respectability of all our
agendas. I have hope that the naming solution,
when we find it, will turn out to have been
forehead-slappingly obvious. (Maybe this "obvious"
solution is already on the table, and the
obviousness of it just hasn't struck all of us yet.
Or, maybe not.)
Returning to my pre-stressed concrete metaphor (I
really like this metaphor), let me extend it
further.
The SAM is like concrete. We need its rigidity,
its low cost, its convenience, and its
just-mix-it-and-pour-it simplicity. But by itself
it may crack under the stresses that will come from
directions other than the direction of compression
-- the direction in which it's inherently strong.
The RM is like the steel cables used in
pre-stressed concrete. We can't build highways,
bridges, or buildings using only those cables,
because they wiggle around too much, and they're
too narrow to walk on, much less to drive a bus on
them. We need to embed the cables in the concrete,
and, after the concrete has hardened, we need to
use their tension-strength to compress the
concrete.
The dependency of the SAM on the RM is like the
tension we place on the cables, after the concrete
has hardened with the cables inside it. We screw
those cables down hard against the steel endplates
on the concrete girder, putting the concrete girder
under many, many tons of pressure, end-to-end.
Once we've done that, we've made a pre-stressed
concrete girder that's incredibly strong, on which
we can safely drive buses for millenia.
Regardless of the design of the SAM, and regardless
of whether I personally agree with the design of
the SAM, I hope we will screw those cables down
tightly, because that compressive force will make
the SAM capable of withstanding all kinds of
stress. Without that compressive force, the SAM --
and the buses that drive on it -- will be
vulnerable to shearing and tension forces -- forces
that aren't compression forces. I want us to put
*TONS AND TONS* of pressure on the SAM,
permanently, so it will remain in one piece, come
what may.
When I say "put tons of pressure on the SAM,
permanently", I mean "express the SAM in RM terms."
This is pretty consistent with what the current
draft of the SAM already does. A few more kinds of
things need to be said, though -- a few more turns
of the screws, a few more tons of pressure, so as
to maximize the strength of the SAM. I think the
concrete has already hardened, at least in the
minds of the people who have brought Topic Maps to
the marketplace. I do not propose to change the
concrete, or to pour new concrete; we're past that
stage now. All I want to do is to make the
concrete we have as durable as possible.
-- Steve
Steven R. Newcomb, Consultant
srn@coolheads.com
Coolheads Consulting
http://www.coolheads.com
voice: +1 972 359 8160
fax: +1 972 359 0270
1527 Northaven Drive
Allen, Texas 75002-1648 USA