7th October 2012, 07:38 PM
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Member
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Join Date: Sep 2011
Posts: 1,561
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Quote:
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Originally Posted by Barny
I think you'll find that a lot of the purely form based systems posted on here a while ago (a fair while ago) were from an extremely friendly database ...... they were pumped out like sausages and I couldn't get any of them into the profit, let alone the massive POT's that were claimed.
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Are you testing the same period? If not then perhaps the findings were valid for that point in time that they were tested. I can find profitable systems that worked today but may not work tomorrow.
Also it could be that they were profitable for an extended period of time but as showin in "Winning without Thinking" if there are trends which are profitable it is only a matter of time before others find them and the system loses its edge (odds start dropping but same strike rate).
An example of this would be the ratings for tatts. The 100 raters win a huge number of races but those ratings are so overrated that they are usually over bet. |