byrnema comments on Mechanics without wrenches - Less Wrong

33 Post author: PhilGoetz 15 April 2009 08:09PM

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Comment author: byrnema 16 April 2009 10:17:58PM *  0 points [-]

That's an unfortunate example: to the extent which economics is quantifiable, it's all differential equations... heck, marginal utility is a differential equation!

Maybe they weren't explicitly stated as differential equations but:

Once you learn the concept of a differential equation, you see differential equations all over, no matter what you do.

so it can't be helped.

Comment author: William 17 April 2009 12:48:35AM 1 point [-]

Speaking of differential equations in economics, a friend of mine has had an idea that there should be an economics textbook for mathematicians, because it annoyed him so much that they seem to dance around mathematical concepts--for example, marginal anything is clearly a derivative, although normal econ textbooks never call it that.

Comment author: conchis 17 April 2009 05:17:36PM 0 points [-]

marginal anything is clearly a derivative

Not in the discrete case.

Comment author: steven0461 17 April 2009 05:10:36PM 0 points [-]

That's odd -- if anything, econ usually gets accused of being way too much about mathematical formalism. This, for example, might as well be "an economics textbook for mathematicians"; maybe your friend will find it helpful.

Comment author: PhilGoetz 17 April 2009 04:49:20PM 0 points [-]

Do you mean a math text for economists?