Some ideas to save the financial system from quants
takimag.com
takimag.com
1) Put the markets (the trading boards) on a stepped clock, with relatively large intervals with respect to processing speed.
2) For each interval, randomize the processing of queued work items (i.e. orders).
I suppose regulations, or something, would be needed to bridle potentially competitive trading opportunities (meaning, environments, including private, off-board transactions).