i think this talk of the ppt is pure nonsense.. once you stop worrying about all the what ifs.. dark pools. computerized trading etc.. you can then get on with trading.. think of it this way.. i any business there i competition and sometimes things in business are unfair.. well most of the time. So if you want to be a successful trader then figure out a way to make that happen.. if it means getting an ivy league mba and working for goldman then do it.