how about we talk about this,
like some physics law, or engineering formula. like material, if u did not did any thing about atomic structure & bonding, assangement, how can u invent a new kind of material.
also every body knows that a froce apply on a material will due to material fail, but why??
on the other hand, u mean the eco model can not use in manufacture, control? that is means u do not have any experience or knowledge about it.
like if we making a conclusion whether have a price war or not?? what we use, IEBA model, what is that come from, magrginal utility. how can u say that eco model is useless?
also like I am working in real estate dept for a private equity, I can tell use that a lot of eco model is very useful.
the financial tools is only negative effect?? that also shows u knows nothing.
back home and did a better study. swagger.
still the same work, u don't understand it, not means it useless.


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