It may have played a part. But this week, officials told Congress they were still investigating the causes of the so-called flash crash.

VOA: special.2010.05.14

But regulators investigating the causes have yet to identify a clear cause.

FORBES: SEC Sets 6-Month Test of Stock Circuit Breakers

My years of experience investigating the causes of investment underperformance has led me to conclude that the marketplace is, in fact, dominated by investments that, to varying degrees, are severely comprised and destined to underperform.

FORBES: Develop a "Fiduciary Response" or You Will Get Scammed

The NTSB and the FBI are investigating three possible causes of the July 17 crash that killed all 230 people aboard the plane.

CNN: Attorney: Mechanical failure caused TWA crash