eec78827_ad_investment__or_vice_versa____The_Pricing_Game
[0] Underlying philosophy [The Value Game] Every asset has a fair or true value. You can estimate that value, albeit with error, and price has to converge on value (eventually). [The Pricing Game] 
The price is the only real number that you can act on. No one knows what the value of an asset is and estimating it is of little use.