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While writing his own trading system is a decent accomplishment, due to things such as an overall rising market in the time period involved and survivorship bias, the original author is likely to be completely mistaken about the reason for his winnings.

Given that he might convince other people to engage in high tech gambling in a less-favorable market than the one he operated in, strong words are called for in this case.

You could argue this, but in that case your arguments have to hold water and not just be a cursory dismissal. Ref. yajoe's much more thorough reasoning.

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