I can see the limitations in equating stock price directly with GM retooling a factory for a new model year, but it is a far more accurate depiction of what is

I can see the limitations in equating stock price directly with GM retooling a factory for a new model year, but it is a far more accurate depiction of what is going on, even if a little abstract, than to say that they have nothing to do with each other and even spelling it out letter by letter. Saying that it is basically a closed system is even more bizarre.