You're saying that stocks are not suitable for short term trading systems. What I'm saying is that stocks are suited for short term trading; and yes I say it based on my experience in Swift where I see 4000 people beating the stock market day in day out, while trading in very short time frames. Now, if you were saying that stocks are not suitable for short term trading IF you're a retail trader, then I'll have to agree with you, they simply don't have the necessary fee structure and leverage to make high frequency trading a profitable activity.