Quote from cnms2:
What you're saying is that there're no rules / strategies that will work no matter what. To get the long term positive expectancy it depends on when and how you decide to apply a strategy or another function of your forecast of price and implied volatility. The readers of this journal shouldn't think that this is about a fail safe options strategy that they could use in any circumstances. You're picking those underlyings that you expect to behave favorably to your selling of short term straddles.