Positive and negative...do you believe in karmic reactions?

Everyone believes in luck to some extent, though it may be called something different to them. It could be called fate, or "divine intervention", or they could just think they're invincible, I call it karma, but one thing is the same, they all believe that things happen for no apparent reason that either positively or negatively affect their current life path. But what happens when one karmic reaction interferes with another, chain reactions WILL occur. If your karma is bad, and you go, for instance, on a plane, and your karma causes that plane to crash, then what? What of the other passengers? What is the plausibility of all those people having alike karmic reactions at the same time? What we must gather from this example is that one's karma affects others outcomes. The man got on the plane with bad karma, so for him, it was just his time. However, the man next to him may be an activist, or for easy comparison, positive karma. Karma would have it that the innocent are casualties in the quest of karmic balance, once again offsetting the positive and negative in an eternal quest to close the karmic gap this world has created. Lets ponder that, shall we?