Gravity, entropy, action and reaction, and Murphy's: the laws of nature are pitiless. Sometimes technology lets you evade the laws -- like radar detectors or plastic surgery.

There's one law that should always be enforced, and that's the law of natural selection. Unfortunately, technology lets the wrong people get around that law as well:

Police said a lovesick teenager tried to kill herself but ended up killing someone else instead.Authorities in Atlanta described what they said was a suicide attempt by a 16-year-old girl, who they said sent text messages on her cell phone as she was about to drive into an oncoming car. They said Louise Egan Brunstead had told friends she was going to kill herself, because another female student at her high school had refused to have sex with her....

[B]efore driving her family's Mercedes into the oncoming car, she counted down, "Nine, eight, seven, six -- I'm going to do it" in a text message to the girl who had rejected her. Brunstead survived the Oct. 4 crash with just an ankle injury -- but the driver of the other car, Nancy Salados-Mayo, a mother of three, was killed.

The law of unintended consequences. It's a bitch, isn't it?