The Industry choice
EP at zomething.com
Wed Jan 5 03:36:52 EST 2005
Bulba! <bulba at bulba.com> wrote:
> Frankly, I find such models to be built on over-stretched analogies
> to physics - how _exactly_ is gravity supposed to be an analogy
> equivalent to economic "forces"? Sure such model can be built - but
> is it adequate in explaining real-world phenomenons? Analogy
> tends to be the weakest form of reasoning. I'd be wary of making
> such analogies.
Apparently the Gravity Model is still of some interest, if recent citations are an indication. I'm not an expert, but all the economic models I was taught were also grounded in math, not just analogy.
gravity models: http://faculty.washington.edu/krumme/systems/gravity.html
some empirical studies: http://www.hec.unil.ch/mbrulhar/Empirtrade/#gravity
> Models like this probably tend to be built by French engineers from
> this joke:
> The American and French engineers work together on some
> product (that would look strange nowadays but it's not impossible
> in principle).
> The Americans show the French engineers a working prototype.
> The French engineers scratch their heads and ask warily:
> "OK, it works in practice; but will it work in theory?"
Yeah, I hate it when people try to understand things.
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