Read the article kjj posted. I promise you it'll clear everything up.
I don't think you understand the qualitative difference between actual research and people's beliefs

There's no data set in which a trader has ever outperformed chance. Ever. The only way to do so is to not base the trades on available market data - which is usually referred to inside trading or other forms of manipulation.
If you want to claim differently I urge you to
source that information. Please. There's still a Nobel Prize waiting
