[torero]

I think throughout the decades since the beginning of century, new technologies bring in new players along with bull and bear markets. People come in with bull markets, then blow in bear markets. Some never come back, some stayed and make a living. But one common denominator is the human behavior factor: our nature has not changed in centuries and trading requires the survivors to do the most unnatural things to succeed.

The famous 5%-95% ratio (if it's true) remains constant so long as human nature don't change. It's no wonder chart pattern and price action in old charts look the same as they are now. If you look at dotcom bubbles, it's not the first bubble and won't be the last. History repeats itself because ... we're humans!!!

So technology won't change human nature. It may make it easier for us to trade but prevent us from screwing up the trades. Even with system trading, believe it or not, human intervention is very common (yep, dang human nature must have its hand in everything).