Fracking is reminiscent of investment derivatives and credit default swaps.
Big Money assures us that everything "going on in the "\back room" is supervised by responsible adults.
Here's a simple way to assess risk: determine how much it would cost oil companies to bond themselves against future fracking losses.
If fracking is as safe as "BP officials say," the cost of bonding should be very low.
For two millennia, Christian theologians have posited a moral principle much like the Hippocratic Oath: "When in moral doubt, don't."