Patio,
That is probably the article that I am recalling. I remember thinking up scenarios in which killing someone with a big rock could be relatively humane. And indeed I came up with at least one. So don't mess with me. Of course, the bible doesn't specify a quick death blow to the head with a huge rock delivered by a powerful person. Nope, it gets the whole family involved. "Jimmy, Natalie, put down those toys and pick up some rocks this very instant, unless you want to end up beside your sister Rahab!