And confidence tricksters perform trust arbitrage. This is all just ways of saying HFT is exploiting a loop-hole in a system to make money for themselves. The

And confidence tricksters perform trust arbitrage. This is all just ways of saying HFT is exploiting a loop-hole in a system to make money for themselves. They could all be eliminated overnight and the free-market system would not notice their absence at all. They don't provide a service to anyone besides themselves, they don't provide liquidity, they are nothing except parasites.