“Many traders mistakenly believe that there is some single solution to defining market behavior… [searching for this Holy Grail] …. the reality is that there is no single solution to the markets, and any solutions that do exist are continually changing. Successful traders adapt to changing market conditions… Finding success in the market is a dynamic rather than a static process.”
– Edward Thorp
I think, HFT funds traders found some solution which is close to the holy grail. However, you are right. It has to be updated on a regular basis.
😉