Of course they do, they are not a massive aggregation of biases, wishful thinking, ego, and false bluster . . .
Robots are better investors than people - FT.com
. . . waiting to trap the unwary.
These robots simply act on well established maxims of investing. They will do better than the individual trying to pick individual stocks, they will do better than the average professional, even better than the big time pros, and hedge fund managers. But they will only do so until most people begin using robots to invest. What is going on is the robot play the market as the "house." In this role, everyone else takes the flyers, risking money willy nilly. Once these flyers are gone, returns will level out.
Forget what I just said, you really need to develop your own investment strategy, and buy your own stocks, I need about 40 more years of solid return from other people making flyer investments to make retirement work! Get cracking!