One thing I've always wondered, if you take a day trader that was wiped out in some time span, and reversed all the trades (ie sell rather than buy and buy rather than sell), would they still be wiped out?
Possibly. Also, due to the nature of trading, they may have been wiped out in this hypothetical "reverse all trades" scenario before they were in reality. For example, they could have had one potent stochastic windfall early in their career that, had it gone the other way, would have wiped them out.