I have read that and it does seem plausible. It would be nice to know one way or another.
It would be nice to know what the signals are that trigger the sell-offs.
I think each investment group sets their own indices or % triggers. I doubt we will ever know the complete truth of it. The coincidences are very frustrating. McCain is surging, Palin is connecting and then on a Friday the money mkts begin to collapse.