My overall question is whether or not you have traded a system based upon failures of setups? It seems often that a setup that fails, or a test that fails, turns into a wonderful stop-and-reverse, and can be a real money-maker.
Some background...
I have been trying out various methods of trading. Lately I am using a system based upon reversion to the mean to identify setups. It seems to test very well. It is discretionary when it comes to exits but the entry signals are objective.
I have noticed that when a setup fails to work, a stop-and-reverse can be quite profitable. I have observed this with other systems and approaches I've tested in the last few months, too...that when something behaves differently than the way it "should", it can be a high probability setup in the other direction.
Have you ever traded based upon this?