Quote from vincentvega:
~ How many variables have you optimized? How many trades have you executed over the total period? Are you making more than 200 trades per variable?
~ Will all variables, within a reasonable range, still produce desirable results?
~ Does the system progressively degrade as you enter different inputs?
~ Is the system doing what you designed it to do? Have you cross referenced your trades with your indicator(s)/system and found no contradictions? - Generally it will be very obvious at first look.
~ Have you attempted to test the system in some kind of live condition - paper trading or replay and produced the same results as your back tests?
~ Does it at least work to a certain extent on other contracts, even if not as well?
If you answer no to any of these, your system is junk . You are making progress with your experience though, so congratulations.
~ Lastly, and the most difficult to ask and be honest with yourself - was the system a "fluke" eureka moment, a result of trial and error or the product of something very simple that most likely has been tried before?