How to judge and use a MODEL (the CAPM case). Aswath Damodaran.

[@bradmusolff]

Teaching such a flawed concept likely causes more harm than good. The admission here that the model really doesn't work along with the 'do you have a better model' should tell you all that you need to know.

[@SweatYourAssets]

thanks Brad. Indeed, I like to remind myself that "all models are wrong, but some are useful."