Quote from SteveNYC:
There is no proof that HFT caused the flash crash. To this day, we don't know what caused the flash crash. It could have been a fat finger error. Sudden market plunges have happened b4 in the US and in other countries but of a smaller magnitude. Both were fat finger mistakes.
Again, the government needs to study the impact of HFT b4 doing anything. They could create problems or make the problems worse.
The current circuit breakers/speed bumps might be enough to stop sudden plunges.
Really...????
there are many proofs if you are willing to research them, which will show us that not only HFT caused the flash crash but more that it was one specific firm's algo that cause it all,yes you hear it right.
just at the beginning the narrator speaks Deutsch and some others minor interventions the rest is in english so you should be fine
http://www.youtube.com/watch?v=x8SMjyXdc3I