How fast is high-frequency stock trading? In the time it takes to read this sentence, tens of thousands of high-speed, computer-automated transactions can occur. Winning traders edge out rivals by intervals measured in nanoseconds. Fans of the practice say that high-frequency traders add crucial liquidity to the stock market. Critics dispute that claim and highlight, instead, lurking perils for the global financial system.
Yes! It IS time for some greater introspection about this, before there are even worse problems. Right now, there is very little understanding of risks to most people, including the voting public. European regulators seem to have a more realistic view and be willing to act upon it than in the U.S.A.