Cynical Nation

Fifteen specialists for the New York Stock Exchange were indicted yesterday for "interpositioning" and "trading ahead," pocketing millions of dollars at the expense of legitimate traders.

Now I have a simple question. In this modern age of computerized everything, why does the NYSE still rely on human beings to match orders? Is there something I'm missing here? Perhaps some hard-core traders can write in and tell me what advantage, if any, this might have over something like the NASDAQ, but my gut tells me that any "advantage" would be to people trying to game the system.