[danmaz74]

Ok, but you would need to take into account the interaction with other traders' models that are put into play all the time...

[andylei]

yup, building good models is hard. doesn't mean they always produce bad results. billions of dollars of quant hedge fund money prove that.

[danmaz74]

"essentially, all models are wrong, but some are useful" George EP Box - one of the greatest truths imho :)