Quote from asap:
mental dont exist anymore, it is a tale from ancient times when traders made their decisions manually as the market action evolved.
nowadays, most of the professional community relies on some sort of ats to run the operation. i believe around 90% of the volume in the eurex and globex is computer based. thus, trading is becoming an emotionless activity that is solely based on code supremacy, aka binary edge. also, there is no static edge anymore. the dynamics of competition fueled by hoards of brain and computer power alters the rules of the game on a constant basis. sustaining an edge on the long haul in such environment is increasingly difficult and it is totally based on survival of fittest (fittest code, that is).