Quote from Maverick2608:
I have just read the entire 29 pages. I wish I had been too lazy and just read the two lines above.
Put differently:
HFT trading outfits enjoy trading advantages. Trading is a zero sum game. If you compete within their game, their gain will be your loss. Hence, find a different game.
It amazes me that luck or randomness is not mentioned once within the 29 pages. That 90% of day traders lose is entirely what you would expect if no one possesses any real skills and the trading is entirely random - simply due to the burden of commissions involved in heavy-turnover trading.
The remaining 10%, me included, can never be sure whether our success is due to skill or chance. After turning in a profit for many years, I am still not sure whether I am just part of the 10% that by mathematical necessity ends up on top.
(Whether the split is 10-90, 5-95, 15-85 or 2-98, I do not know.)