Two sides to every coin.

I've posted before about the fact that nothing is all good or all bad - every good thing has the potential to be bad (religion?) and every bad thing the potential to do good.  Ecstasy (bad drug) - or more specifically, a modified version - has now been shown to be able to kill cancer cells, at least in test tubes, and is being touted as a significant development in the fight against cancer.  Several years away yet, but scientists are describing it as "a genuinely exciting proposition".