*Arbitrage: computers: definitely better. *Making a market: in electronic markets, black boxes can react much quicker than a mortal can. *Technical analysis: A properly programmed computer, why wouldnÂ´t it be able to recognize patterns just as well as human beings? *Fundamental analysis: More and more computer interpreted systems are coming in, but still the human has the clear upper hand. Thus, in my opinion, we are being outrun, made redundant, except for fundamental analysis.